Yeah, I think he knows his way around the rep world pretty well. There's been a controversy about some domed T21 crystals of his that wouldn't fit gen Daytonas last week or the week before...
He wouldn't be the first choice when I was looking for gen parts. That's actually the one thing I really hate about this so called vintage Rolex community. No matter how well respected dealers are, no matter what reputation they have, they might and will try to screw you over!
I once bought a "gen" 6265 bezel from another long time member who's constantly selling pretty rare stuff there and it wouldn't even fit my gen T21 (way too large diameter apart from other tells). He did refund my money, even called me up and told me he did not know what had happened and that he was 100% sure it wasn't a fake part because he knew all of them ( I DID believe him on that one). This guy is constantly selling stuff over there for thousands of dollars and I am sure some of it is aftermarket and that he does indeed know exactly what is going on.
You can not trust anybody over there, verify everything.