Some background info - I was assembling the diver and I may have accidently changed the date around the 12 hour mark (I don’t remember exactly).
So I got up to the point of installing the hour and minute hands, and I was able to set the time without a problem. Then I pushed the crown into winding position, pull it out to change the time again - but now my hands won’t move anymore. It’s like the stem is not clicking with the wheels. The quick date change function is still working but I cannot set the time. Maybe I broke the date change mechanism? Can anybody help me out?