Changeable Cryptex

I changed some parts of HGWs "Kryptex als Geocache" so that the combination code stays changeable. I know this was not the intention on the original one because as a geocache it would be senseless if anyone could change the combination. So I made a new ring that locks in the base cylinder and holds the coding rings in position. While printing I had some other ideas to do this better (using a thread?!), maybe there will be an update.
I printed this cryptex at 50% and had little post-treatment t