The Ptfe tube is likely the answer, if you can replace I recommend trying to. Make sure it is seated correctly and properly clamped in place when you’re putting it back together.

Good luck!

Right handed, left front pocket, this is the way.

Outstanding work! Did you have previous experience with Fusion360 and modeling?

For some reason the working photo didn’t come through for me (on wefwef client).

(edit: it’s a video/clip - maybe wefwef can’t handle that yet)