diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 0eff9e470f..36580f7785 100755
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -4616,7 +4616,7 @@
                     "unit": "mm³",
                     "default_value": 0,
                     "minimum_value": "0",
-                    "maximum_value_warning": "0.5",
+                    "maximum_value_warning": "1",
                     "settable_per_mesh": false,
                     "settable_per_extruder": true
                 },
diff --git a/resources/variants/ultimaker3_bb0.8.inst.cfg b/resources/variants/ultimaker3_bb0.8.inst.cfg
index ddb1aa3c7e..8ed7c92511 100644
--- a/resources/variants/ultimaker3_bb0.8.inst.cfg
+++ b/resources/variants/ultimaker3_bb0.8.inst.cfg
@@ -24,6 +24,7 @@ infill_overlap = 0
 infill_pattern = triangles
 infill_wipe_dist = 0
 jerk_enabled = True
+jerk_prime_tower = =math.ceil(jerk_print * 2 / 25)
 jerk_print = 25
 jerk_support = =math.ceil(jerk_print * 15 / 25)
 jerk_support_interface = =math.ceil(jerk_support * 10 / 15)
@@ -38,6 +39,7 @@ material_print_temperature = =default_material_print_temperature + 10
 material_standby_temperature = 100
 multiple_mesh_overlap = 0
 prime_tower_enable = False
+prime_tower_purge_volume = 1
 prime_tower_wipe_enabled = True
 raft_acceleration = =acceleration_layer_0
 raft_airgap = 0
diff --git a/resources/variants/ultimaker3_bb04.inst.cfg b/resources/variants/ultimaker3_bb04.inst.cfg
index b5698dea54..a5aa03f1fa 100644
--- a/resources/variants/ultimaker3_bb04.inst.cfg
+++ b/resources/variants/ultimaker3_bb04.inst.cfg
@@ -14,11 +14,13 @@ acceleration_support_interface = =math.ceil(acceleration_support * 1500 / 2000)
 acceleration_support_bottom = =math.ceil(acceleration_support_interface * 100 / 1500)
 cool_fan_speed_max = =cool_fan_speed
 gradual_support_infill_steps = 2
+jerk_prime_tower = =math.ceil(jerk_print * 2 / 25)
 jerk_support = =math.ceil(jerk_print * 15 / 25)
 jerk_support_interface = =math.ceil(jerk_support * 10 / 15)
 jerk_support_bottom = =math.ceil(jerk_support_interface * 1 / 10)
 machine_nozzle_heat_up_speed = 1.5
 machine_nozzle_id = BB 0.4
+prime_tower_purge_volume = 1
 raft_base_speed = 20
 raft_interface_speed = 20
 raft_speed = 25
diff --git a/resources/variants/ultimaker3_extended_bb0.8.inst.cfg b/resources/variants/ultimaker3_extended_bb0.8.inst.cfg
index 55ed280f36..886167f714 100644
--- a/resources/variants/ultimaker3_extended_bb0.8.inst.cfg
+++ b/resources/variants/ultimaker3_extended_bb0.8.inst.cfg
@@ -24,6 +24,7 @@ infill_overlap = 0
 infill_pattern = triangles
 infill_wipe_dist = 0
 jerk_enabled = True
+jerk_prime_tower = =math.ceil(jerk_print * 2 / 25)
 jerk_print = 25
 jerk_support = =math.ceil(jerk_print * 15 / 25)
 jerk_support_interface = =math.ceil(jerk_support * 10 / 15)
@@ -38,6 +39,7 @@ material_print_temperature = =default_material_print_temperature + 10
 material_standby_temperature = 100
 multiple_mesh_overlap = 0
 prime_tower_enable = False
+prime_tower_purge_volume = 1
 prime_tower_wipe_enabled = True
 raft_acceleration = =acceleration_layer_0
 raft_airgap = 0
diff --git a/resources/variants/ultimaker3_extended_bb04.inst.cfg b/resources/variants/ultimaker3_extended_bb04.inst.cfg
index 7393b0a24a..eb9eefed0c 100644
--- a/resources/variants/ultimaker3_extended_bb04.inst.cfg
+++ b/resources/variants/ultimaker3_extended_bb04.inst.cfg
@@ -14,11 +14,13 @@ acceleration_support_interface = =math.ceil(acceleration_support * 1500 / 2000)
 acceleration_support_bottom = =math.ceil(acceleration_support_interface * 100 / 1500)
 cool_fan_speed_max = =cool_fan_speed
 gradual_support_infill_steps = 2
+jerk_prime_tower = =math.ceil(jerk_print * 2 / 25)
 jerk_support = =math.ceil(jerk_print * 15 / 25)
 jerk_support_interface = =math.ceil(jerk_support * 10 / 15)
 jerk_support_bottom = =math.ceil(jerk_support_interface * 1 / 10)
 machine_nozzle_heat_up_speed = 1.5
 machine_nozzle_id = BB 0.4
+prime_tower_purge_volume = 1
 raft_base_speed = 20
 raft_interface_speed = 20
 raft_speed = 25