diff --git a/cura/PrinterOutput/ExtruderConfigurationModel.py b/cura/PrinterOutput/ExtruderConfigurationModel.py
index 19d53d1271..75ee4b6ab3 100644
--- a/cura/PrinterOutput/ExtruderConfigurationModel.py
+++ b/cura/PrinterOutput/ExtruderConfigurationModel.py
@@ -11,9 +11,9 @@ class ExtruderConfigurationModel(QObject):
 
     extruderConfigurationChanged = pyqtSignal()
 
-    def __init__(self):
+    def __init__(self, position: int = -1):
         super().__init__()
-        self._position = -1  # type: int
+        self._position = position  # type: int
         self._material = None  # type: Optional[MaterialOutputModel]
         self._hotend_id = None  # type: Optional[str]
 
diff --git a/plugins/Toolbox/src/Toolbox.py b/plugins/Toolbox/src/Toolbox.py
index 4d04da5de0..c4205b8ed5 100644
--- a/plugins/Toolbox/src/Toolbox.py
+++ b/plugins/Toolbox/src/Toolbox.py
@@ -183,7 +183,6 @@ class Toolbox(QObject, Extension):
             "materials_available": QUrl("{base_url}/packages?package_type=material".format(base_url=self._api_url)),
             "materials_generic": QUrl("{base_url}/packages?package_type=material&tags=generic".format(base_url=self._api_url))
         }
-        print("*******", self._request_urls )
 
     # Get the API root for the packages API depending on Cura version settings.
     def _getCloudAPIRoot(self) -> str:
diff --git a/plugins/UM3NetworkPrinting/ClusterUM3OutputDevice.py b/plugins/UM3NetworkPrinting/ClusterUM3OutputDevice.py
index 6f292d4f4b..6fffe2e3bf 100644
--- a/plugins/UM3NetworkPrinting/ClusterUM3OutputDevice.py
+++ b/plugins/UM3NetworkPrinting/ClusterUM3OutputDevice.py
@@ -520,18 +520,16 @@ class ClusterUM3OutputDevice(NetworkedPrinterOutputDevice):
                                         key=data["uuid"], name= data["name"])
 
         configuration = ConfigurationModel()
-        extruders = []
+        extruders = [ExtruderConfigurationModel(position = idx) for idx in range(0, self._number_of_extruders)]
         for index in range(0, self._number_of_extruders):
-            extruder = ExtruderConfigurationModel()
-            extruder.setPosition(index)
             try:
                 extruder_data = data["configuration"][index]
             except IndexError:
-                break
-
+                continue
+            extruder = extruders[int(data["configuration"][index]["extruder_index"])]
             extruder.setHotendID(extruder_data.get("print_core_id", ""))
             extruder.setMaterial(self._createMaterialOutputModel(extruder_data.get("material", {})))
-            extruders.append(extruder)
+
         configuration.setExtruderConfigurations(extruders)
         print_job.updateConfiguration(configuration)
 
diff --git a/plugins/UM3NetworkPrinting/PrintCoreConfiguration.qml b/plugins/UM3NetworkPrinting/PrintCoreConfiguration.qml
index 893f6f7177..46e45feac9 100644
--- a/plugins/UM3NetworkPrinting/PrintCoreConfiguration.qml
+++ b/plugins/UM3NetworkPrinting/PrintCoreConfiguration.qml
@@ -18,6 +18,15 @@ Item
         id: extruderCircle
         width: 30
         height: 30
+        opacity:
+        {
+            if(printCoreConfiguration == undefined || printCoreConfiguration.activeMaterial == undefined || printCoreConfiguration.hotendID == undefined)
+            {
+                return 0.5
+            }
+            return 1
+        }
+
         Rectangle
         {
             anchors.fill: parent
@@ -30,7 +39,7 @@ Item
         {
             anchors.centerIn: parent
             font: UM.Theme.getFont("default_bold")
-            text: printCoreConfiguration != undefined ? printCoreConfiguration.position + 1 : ""
+            text:  printCoreConfiguration.position + 1
         }
     }
 
@@ -40,7 +49,7 @@ Item
         text:
 
         {
-            if(printCoreConfiguration != undefined  && printCoreConfiguration.activeMaterial != undefined)
+            if(printCoreConfiguration != undefined && printCoreConfiguration.activeMaterial != undefined)
             {
                 return printCoreConfiguration.activeMaterial.name
             }
@@ -58,7 +67,7 @@ Item
         id: printCoreLabel
         text:
         {
-            if(printCoreConfiguration != undefined  && printCoreConfiguration.hotendID != undefined)
+            if(printCoreConfiguration != undefined && printCoreConfiguration.hotendID != undefined)
             {
                 return printCoreConfiguration.hotendID
             }