I used Fusion 360 to import the step file from DS to make the changes.

The f3d, step and stl files are included in case anyone wants to make further changes / adjustments.  I printed the model with CC3D PETG Bright Green, 0.2mm SPEED profile, 4 walls, 25% infill

When the filament on the spool gets down to 1kg the model in no longer needed.