diff --git a/resources/definitions/mingda_1000pro.def.json b/resources/definitions/mingda_1000pro.def.json
index bfcab9c9ca..97292569fe 100644
--- a/resources/definitions/mingda_1000pro.def.json
+++ b/resources/definitions/mingda_1000pro.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 1000Pro",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "quality_definition": "mingda_base"
     },
     "overrides":
diff --git a/resources/definitions/mingda_1000proplus.def.json b/resources/definitions/mingda_1000proplus.def.json
index 19f15d22da..beb1df1d47 100644
--- a/resources/definitions/mingda_1000proplus.def.json
+++ b/resources/definitions/mingda_1000proplus.def.json
@@ -1,5 +1,5 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 1000Pro+",
     "inherits": "mingda_base",
     "metadata":
diff --git a/resources/definitions/mingda_400d.def.json b/resources/definitions/mingda_400d.def.json
index 6c002a6cce..be0cd8dc1d 100644
--- a/resources/definitions/mingda_400d.def.json
+++ b/resources/definitions/mingda_400d.def.json
@@ -1,5 +1,5 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 400D",
     "inherits": "mingda_base",
     "metadata":
diff --git a/resources/definitions/mingda_4h.def.json b/resources/definitions/mingda_4h.def.json
index a9977fdf67..862dd157f7 100644
--- a/resources/definitions/mingda_4h.def.json
+++ b/resources/definitions/mingda_4h.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 4H",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "quality_definition": "mingda_base"
     },
     "overrides":
diff --git a/resources/definitions/mingda_600pro.def.json b/resources/definitions/mingda_600pro.def.json
index 7909bcc872..e411caabbe 100644
--- a/resources/definitions/mingda_600pro.def.json
+++ b/resources/definitions/mingda_600pro.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 600Pro",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "quality_definition": "mingda_base"
     },
     "overrides":
diff --git a/resources/definitions/mingda_600proplus.def.json b/resources/definitions/mingda_600proplus.def.json
index 6fe187b14f..a02f9a42b3 100644
--- a/resources/definitions/mingda_600proplus.def.json
+++ b/resources/definitions/mingda_600proplus.def.json
@@ -1,5 +1,5 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 600Pro+",
     "inherits": "mingda_base",
     "metadata":
diff --git a/resources/definitions/mingda_6h.def.json b/resources/definitions/mingda_6h.def.json
index 63e39b7a5d..7c0eede4f1 100644
--- a/resources/definitions/mingda_6h.def.json
+++ b/resources/definitions/mingda_6h.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda 6H",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "quality_definition": "mingda_base"
     },
     "overrides":
diff --git a/resources/definitions/mingda_base.def.json b/resources/definitions/mingda_base.def.json
index b07dbe458f..f23f9bec19 100644
--- a/resources/definitions/mingda_base.def.json
+++ b/resources/definitions/mingda_base.def.json
@@ -1,5 +1,5 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Base Printer",
     "inherits": "fdmprinter",
     "metadata":
@@ -18,7 +18,6 @@
         "has_machine_quality": true,
         "has_materials": true,
         "has_variants": true,
-        "machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "preferred_material": "generic_pla",
         "preferred_quality_type": "standard",
         "preferred_variant_name": "0.4mm Nozzle",
diff --git a/resources/definitions/mingda_base_extruder_0.def.json b/resources/definitions/mingda_base_extruder_0.def.json
deleted file mode 100644
index 99355355ec..0000000000
--- a/resources/definitions/mingda_base_extruder_0.def.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-    "version": 2,
-    "name": "Extruder 1",
-    "inherits": "fdmextruder",
-    "metadata":
-    {
-        "machine": "mingda_base",
-        "position": "0"
-    },
-    "overrides":
-    {
-        "extruder_nr":
-        {
-            "default_value": 0,
-            "maximum_value": 1
-        },
-        "machine_extruder_end_pos_abs": { "default_value": true },
-        "machine_extruder_end_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_end_pos_y": { "value": "prime_tower_position_y" },
-        "machine_extruder_start_pos_abs": { "default_value": true },
-        "machine_extruder_start_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_start_pos_y": { "value": "prime_tower_position_y" },
-        "machine_nozzle_offset_x": { "default_value": 0.0 },
-        "machine_nozzle_offset_y": { "default_value": 0.0 },
-        "machine_nozzle_size": { "default_value": 0.4 },
-        "material_diameter": { "default_value": 1.75 }
-    }
-}
\ No newline at end of file
diff --git a/resources/definitions/mingda_base_extruder_1.def.json b/resources/definitions/mingda_base_extruder_1.def.json
deleted file mode 100644
index f94095e440..0000000000
--- a/resources/definitions/mingda_base_extruder_1.def.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-    "version": 2,
-    "name": "Extruder 2",
-    "inherits": "fdmextruder",
-    "metadata":
-    {
-        "machine": "mingda_base",
-        "position": "1"
-    },
-    "overrides":
-    {
-        "extruder_nr":
-        {
-            "default_value": 1,
-            "maximum_value": 1
-        },
-        "machine_extruder_end_pos_abs": { "default_value": true },
-        "machine_extruder_end_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_end_pos_y": { "value": "prime_tower_position_y" },
-        "machine_extruder_start_pos_abs": { "default_value": true },
-        "machine_extruder_start_pos_x": { "value": "prime_tower_position_x" },
-        "machine_extruder_start_pos_y": { "value": "prime_tower_position_y" },
-        "machine_nozzle_offset_x": { "default_value": 0.0 },
-        "machine_nozzle_offset_y": { "default_value": 30.0 },
-        "machine_nozzle_size": { "default_value": 0.4 },
-        "material_diameter": { "default_value": 1.75 }
-    }
-}
\ No newline at end of file
diff --git a/resources/definitions/mingda_d2.def.json b/resources/definitions/mingda_d2.def.json
index 54e969ab74..307a53ea94 100644
--- a/resources/definitions/mingda_d2.def.json
+++ b/resources/definitions/mingda_d2.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda D2",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_d2_base.stl",
         "platform_offset": [
             -205,
diff --git a/resources/definitions/mingda_d3pro.def.json b/resources/definitions/mingda_d3pro.def.json
index 89475e6f42..164d5e0129 100644
--- a/resources/definitions/mingda_d3pro.def.json
+++ b/resources/definitions/mingda_d3pro.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda D3/Pro",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_rock3_base.stl",
         "platform_offset": [
             -179,
diff --git a/resources/definitions/mingda_d4pro.def.json b/resources/definitions/mingda_d4pro.def.json
index 478dac45f7..d2acfd0af1 100644
--- a/resources/definitions/mingda_d4pro.def.json
+++ b/resources/definitions/mingda_d4pro.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda D4 Pro",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_d4pro_base.stl",
         "platform_offset": [
             -177,
diff --git a/resources/definitions/mingda_magician_max.def.json b/resources/definitions/mingda_magician_max.def.json
index 18323b0a29..0560f962a8 100644
--- a/resources/definitions/mingda_magician_max.def.json
+++ b/resources/definitions/mingda_magician_max.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Magician Max",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_magician_max_base.stl",
         "platform_offset": [
             0,
diff --git a/resources/definitions/mingda_magician_maxplus.def.json b/resources/definitions/mingda_magician_maxplus.def.json
index a52b2879b8..467417aa3f 100644
--- a/resources/definitions/mingda_magician_maxplus.def.json
+++ b/resources/definitions/mingda_magician_maxplus.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Magician Max2",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_magician_max_base.stl",
         "platform_offset": [
             0,
diff --git a/resources/definitions/mingda_magician_pro.def.json b/resources/definitions/mingda_magician_pro.def.json
index 8ca11061a0..8a2af14bf3 100644
--- a/resources/definitions/mingda_magician_pro.def.json
+++ b/resources/definitions/mingda_magician_pro.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Magician Pro",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_magician_pro_base.stl",
         "platform_offset": [
             0,
diff --git a/resources/definitions/mingda_magician_proplus.def.json b/resources/definitions/mingda_magician_proplus.def.json
index 2f41be100a..0ff22837f5 100644
--- a/resources/definitions/mingda_magician_proplus.def.json
+++ b/resources/definitions/mingda_magician_proplus.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Magician Pro2",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_magician_pro_base.stl",
         "platform_offset": [
             0,
diff --git a/resources/definitions/mingda_magician_x.def.json b/resources/definitions/mingda_magician_x.def.json
index 61270cf715..115d6c3e60 100644
--- a/resources/definitions/mingda_magician_x.def.json
+++ b/resources/definitions/mingda_magician_x.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Magician X",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_magician_x_base.stl",
         "platform_offset": [
             0,
diff --git a/resources/definitions/mingda_magician_xplus.def.json b/resources/definitions/mingda_magician_xplus.def.json
index c4048b3d4f..9ba3c083bd 100644
--- a/resources/definitions/mingda_magician_xplus.def.json
+++ b/resources/definitions/mingda_magician_xplus.def.json
@@ -1,10 +1,11 @@
 {
-    "version": 2,
+    "version": 3,
     "name": "Mingda Magician X2",
     "inherits": "mingda_base",
     "metadata":
     {
         "visible": true,
+		"machine_extruder_trains": { "0": "mingda_base_extruder_0" },
         "platform": "mingda_magician_x2_base.stl",
         "platform_offset": [
             0,
diff --git a/resources/extruders/mingda_base_extruder_0.def.json b/resources/extruders/mingda_base_extruder_0.def.json
index 2a63d15eb6..99355355ec 100644
--- a/resources/extruders/mingda_base_extruder_0.def.json
+++ b/resources/extruders/mingda_base_extruder_0.def.json
@@ -9,7 +9,19 @@
     },
     "overrides":
     {
-        "extruder_nr": { "default_value": 0 },
+        "extruder_nr":
+        {
+            "default_value": 0,
+            "maximum_value": 1
+        },
+        "machine_extruder_end_pos_abs": { "default_value": true },
+        "machine_extruder_end_pos_x": { "value": "prime_tower_position_x" },
+        "machine_extruder_end_pos_y": { "value": "prime_tower_position_y" },
+        "machine_extruder_start_pos_abs": { "default_value": true },
+        "machine_extruder_start_pos_x": { "value": "prime_tower_position_x" },
+        "machine_extruder_start_pos_y": { "value": "prime_tower_position_y" },
+        "machine_nozzle_offset_x": { "default_value": 0.0 },
+        "machine_nozzle_offset_y": { "default_value": 0.0 },
         "machine_nozzle_size": { "default_value": 0.4 },
         "material_diameter": { "default_value": 1.75 }
     }
diff --git a/resources/extruders/mingda_base_extruder_1.def.json b/resources/extruders/mingda_base_extruder_1.def.json
deleted file mode 100644
index d6a49e62f1..0000000000
--- a/resources/extruders/mingda_base_extruder_1.def.json
+++ /dev/null
@@ -1,22 +0,0 @@
-{
-    "version": 2,
-    "name": "Extruder 2",
-    "inherits": "fdmextruder",
-    "metadata":
-    {
-        "machine": "mingda_base",
-        "position": "1"
-    },
-    "overrides":
-    {
-        "extruder_nr":
-        {
-            "default_value": 1,
-            "maximum_value": "3"
-        },
-        "machine_nozzle_offset_x": { "default_value": 0.0 },
-        "machine_nozzle_offset_y": { "default_value": 0.0 },
-        "machine_nozzle_size": { "default_value": 0.5 },
-        "material_diameter": { "default_value": 1.75 }
-    }
-}
\ No newline at end of file