On the chance that it helps you at all, I broke the same part.

For some reason Prusa loves using those slim squarenuts that tend to bind up due to how few threads they have. Chances are the nut in the pully bound up and stripped out the plastic so now it’s just spinning with the bolt.

There’s a few community made models on printables that replace the nut with threaded inserts. The part should be printed in pc-cf however, and that’s frequently out of stock it seems.

I’m so damn tired of corporations telling me what I can and can’t do.

Call in the national guard apparently.