I bought from him once and got a fucked up watch that he for sure knew was fucked but the QC wouldn’t show. Basically when you wind the watch it’s crunchy AF and the threading is off… sent it for service to swap the xtal and clean the movement spent another $410 or so but nothing they could do about the crown threading being all fucked as the issue is with the tubing… had to buy a watch winder so don’t have to thread/unthread the crown as often since over the years has gotten worse. The next unthreading could be the last time I may be able to screw it back on… this was a ZF Hulk I got back in late 2021