So broken gear is the symptom not the cause. I assume you tried it out of the case and it worked fine? You changed the date ring right? Is it binding once you put it in the case? Maybe auto-advance has enough leverage. I assume you removed the broken tooth from the first gear and it isn't floating around in there jamming things up?jfc I put the faceplate on, went to change the date, and nothing works. Took the faceplate back off, and the new gear is broken.... F*CK