PTFE spoolholder feed clip with stopper

This is a tweak of the short PTFE feed tube holder for the gravity spool holders. The original design was exactly what I needed, but I found that when I unloaded my filament the tube tended to pull through the clip.

This remix shrinks the passthrough hole to 3mm so that 4mm PTFE tube doesn't pull through the clip but the filament still slips right through.

Model available on OnShape here: https://cad.onshape.com/documents/23aece186ea90bd11072a0b3/w/9605aaa910a07177bac7e9f7/e/857c5937fdef3ab381d691f4