I bought an Intra-matic Chrono Auto (the panda variety) a few years ago and absolutely loved it. Pretty quickly though I felt like the screw down crown didn't feel right. I should have made a warranty claim but didn't - over time it got worse and worse until now it feels like it has almost no thread left. (For what it's worth - I have numerous other screw down crown watches and never had a problem - and I've seen other people report similar problems with the Intra-matic screw down crown as...

Intra-matic Auto Chrono - Should this be a full service?