I got tired of jamming the PTFE tube back in place in the filament extruder, so I modified the original back file with M10x1 thread to receive PC4-M10 connectors. It uses the original cover, no need to print a new one. No need to use the screw to tighten the tube on the right side.
EDIT: Added Fusion 360 file
Make sure to push the PTFE all the way in.
Works well!
The author remixed this model.
Added Fusion 360 file.