@Rubl2010_600510 Could you share the file for the adapter? I'd dupe your setup for my K1!
@Bladedreams_4461 Thanks for the hint, I didn't figure out how to try it- I'll let you know. But the current version also works well.
@Rubl2010_600510 I might be wrong, but could you not flip the ends the other way? Making it narrower for the K1 ( not max).
I first printed it out, assembled it, and only then realized, that it was not for my K1) I had to make an adapter.
https://www.printables.com/model/746781-adapter-for-creality-k1-max-top-spool-holder (edited)