I guess the soud is normal while screwing the crown, because it hand-winds at the same.
What comes to the date changing, EXPERTS chime in
And the hands.. my asian SOSF had "straight" hands, but swiss had bend hands, maybe something because swiss seems to have recessed cannon pinion (not sure one can say that, with breitling, but for PAMs anyway?)
Lets hope its easy problem,
Cheers, R