I have the TT1 GMT Worldtimer. Wonderful watch. They later came out with the GMT "only" model that has a 24h bezel instead of a city bezel. Otherwise exactly the same watch. I'd love to be able to change the bezel inlays out myself. I know for Rolex GMTs that is possible. If the bezel inlay itself can't be changed I'd be willing to change the entire bezel.
So here are my questions:
1. Are inlays or bezels available separately?
2. Is it possible to change them yourself?
3. What tools are needed?
Thanks for your help!