diff --git a/resources/definitions/hms434.def.json b/resources/definitions/hms434.def.json
index cd20906ccc..8d70b065c7 100644
--- a/resources/definitions/hms434.def.json
+++ b/resources/definitions/hms434.def.json
@@ -81,9 +81,6 @@
 
         "layer_height":                 {"maximum_value": "(0.8 * min(extruderValues('machine_nozzle_size')))" },
         "layer_height_0":               {"maximum_value": "(0.8 * min(extruderValues('machine_nozzle_size')))" },
-        "line_width":                      {"value": "(machine_nozzle_size + 0.2)" },
-        "wall_line_width_0":               {"value": "(machine_nozzle_size)" },
-        "infill_line_width":               {"value": "(line_width)" },
         "initial_layer_line_width_factor": {"value": 110 },
 
         "wall_thickness":            {"value": "(line_width * 3) if infill_sparse_density < 95 else line_width" },
@@ -111,17 +108,24 @@
         "infill_pattern":        {"value": "'lines'"},
         "infill_before_walls":   {"value": true},
 
-        "material_print_temperature_layer_0": {"value": "material_print_temperature"},
-        "material_initial_print_temperature": {"value": "material_print_temperature",
-                                               "maximum_value_warning": "material_print_temperature + 15"},
-        "material_final_print_temperature":   {"value": "material_print_temperature"},
-        "material_bed_temperature_layer_0":   {"value": "material_bed_temperature"},
-        "material_flow_layer_0":              {"value": "material_flow"},
-        "retraction_enable":                  {"value": true },
-        "retract_at_layer_change":            {"value": false },
-        "retraction_min_travel":              {"value": "(round(line_width * 10))"},
-        "switch_extruder_retraction_speeds":  {"value": "(retraction_speed)"},
-        "switch_extruder_prime_speed":        {"value": "(retraction_prime_speed)"},
+        "default_material_print_temperature":     {"maximum_value": "401" },
+        "material_print_temperature":             {"maximum_value": "401" },
+        "material_print_temperature_layer_0":     {"value": "material_print_temperature",
+                                                   "maximum_value": "401" },
+        "material_initial_print_temperature":     {"value": "material_print_temperature",
+                                                   "maximum_value_warning": "material_print_temperature + 15",
+                                                   "maximum_value": "401" },
+        "material_initial_print_temperature":     {"maximum_value": "401" },
+        "material_final_print_temperature":       {"value": "material_print_temperature",
+                                                   "maximum_value": "401" },
+        "material_break_preparation_temperature": {"maximum_value": "401" },
+        "material_bed_temperature_layer_0":       {"value": "material_bed_temperature"},
+        "material_flow_layer_0":                  {"value": "material_flow"},
+        "retraction_enable":                      {"value": true },
+        "retract_at_layer_change":                {"value": false },
+        "retraction_min_travel":                  {"value": "(round(line_width * 10))"},
+        "switch_extruder_retraction_speeds":      {"value": "(retraction_speed)"},
+        "switch_extruder_prime_speed":            {"value": "(retraction_prime_speed)"},
 
         "speed_print":             {"value": "50"},
         "speed_infill":            {"value": "speed_print"},
diff --git a/resources/extruders/hms434_tool_1.def.json b/resources/extruders/hms434_tool_1.def.json
index 2a36dd4c2b..17f4cbc6f0 100644
--- a/resources/extruders/hms434_tool_1.def.json
+++ b/resources/extruders/hms434_tool_1.def.json
@@ -16,7 +16,7 @@
         "machine_nozzle_offset_y": { "default_value": 0.0 },
         "material_diameter": { "default_value": 1.75 },
         "machine_extruder_start_code": {
-          "default_value": "\n;changing to tool1\nM83\nM109 T0 S{material_print_temperature}\nM114\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E-{switch_extruder_retraction_amount} F2400\nG1 Y40 F3000\nG1 X10 F12000\n\n"
+          "default_value": "\n;changing to tool1\nT0\nM83\nM109 T0 S{material_print_temperature}\nM114\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E-{switch_extruder_retraction_amount} F2400\nG1 Y40 F3000\nG1 X10 F12000\n\n"
         },
         "machine_extruder_end_code": {
            "default_value": "\nG1 X10 Y40 F12000\nG1 X-25 F12000\nM109 T0 R{material_standby_temperature}\nG1 Y20 F3000\n; ending tool1\n\n"
diff --git a/resources/extruders/hms434_tool_2.def.json b/resources/extruders/hms434_tool_2.def.json
index 110695a8fc..00e92613e4 100644
--- a/resources/extruders/hms434_tool_2.def.json
+++ b/resources/extruders/hms434_tool_2.def.json
@@ -16,7 +16,7 @@
         "machine_nozzle_offset_y": { "default_value": 0.0 },
         "material_diameter": { "default_value": 1.75 },
         "machine_extruder_start_code": {
-          "default_value": "\n;changing to tool2\nM83\nM109 T1 S{material_print_temperature}\nM114\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E-{switch_extruder_retraction_amount} F2400\nG1 Y40 F3000\nG1 X10 F12000\n\n"
+          "default_value": "\n;changing to tool2\nT1\nM83\nM109 T1 S{material_print_temperature}\nM114\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E{switch_extruder_retraction_amount} F300\nG1 E-{switch_extruder_retraction_amount} F2400\nG1 Y40 F3000\nG1 X10 F12000\n\n"
         },
         "machine_extruder_end_code": {
            "default_value": "\nG1 X10 Y40 F12000\nG1 X-25 F12000\nM109 T1 R{material_standby_temperature}\nG1 Y20 F3000\n; ending tool2\n\n"