I recently received my Hamilton Khaki Navy GMT back from service. It had, and maybe still has, an issue with one of its screw-down crowns. The winding/setting screw down crown stopped working (basically, it wouldn't screw down) after I'd had the watch for 30 days, so it spend a couple of months with Hamilton being fixed...
On the repaired watch, the crown will now screw down, but only has about 1/3 of a turn of thread engagement. The other two screw down crowns seem to have at least a turn and a half before they're fully seated.
My question is, did Hamilton actually fix my crown (or just get it good enough to send back) and is 1/3 of a turn enough to ensure 200M of water resistance?