the problem began after the bezel installation yes, my watchsmith had to take it off to change the crystal. It's a TC sub but i emphasize that the wobble was not present before the operation when i received the watch from TC, it was tight to start with. The bezel insert and bezel are fine and no play and are installed perfectly. It is the bezel itself that had a slight wobble in it, which can be felt when pushing on the bezel on the 12 and 6 o'clock indices.