I'm sorry I don't have the answer, but "just in case" you hadn't considered it yet... my suggestion is to broaden your search to include:
1.) auto-body shops. My old boss was the type of body-master you're all looking for -- the type of old-school guy who can remove dents with some cloth and a flat head body-hammer, by tapping the peaks of the dent to push it out, or pushing it out from the inside. He started in auto-body shops before opening his motorbike shop, so that's where I would look.
2.) auto-paint supply shops work with or know of professionals who deal with paint and body.
3.) some high-end motorcycle shops use sub-contrators for things they don't need all the time: Pin-stripers who still do them by hand, body-pros, etc. Our shop worked with a local Harley shop to do some projects. This is my last suggestion, because some shops are really tight-lipped about who they work with. Auto-paint shops have no reason to hide their good info.
I guess finally, you could also look up pushing out dents using an inner-tube and compressed air. (Several people here dislike this idea)
I don't know if he's still in business, but my old boss was Russ Foy, of Custom Classic Paint Works. Last number available is (425) 433-0712.
Ravensdale, Washington.