Anyone play with a slightly cupped wrist?

I've been in Cat 1, until recently, for more years than I can remember... probably pushing 40yrs. I've played with a bit of a cupped wrist all that time. If impact through the ball is ok, don't mess with it. Seriously, don't mess with it. There's many a top pro has a swing fault, or better labelled as a characteristic, that doesn't cause a problem.

Thinking of 2 very decent swings, Nichlaus and Kaymer, who both played with a fade. Nichlaus stuck with his method all his life and it didn't do him any harm. Kaymer tried to change his fade to a draw, and I feel he's never got back to how good he was before.

Another 2; Faldo and Lyle. Faldo managed to change his swing but Lyle never even came close to being a good golfer afterwards.

And then there's the likes of Jim Furyk and, if you're a little older, Calvin Peete and Lee Trevino. It doesn't have to look pretty, it only has to produce a score.

As for PGA teachings. In the 80's and 90's it was about producing text book swings. More recently its reverted to the teachings of the 70's and before. Make the best of what you've got.