Thank you, Nihat.
My friend, the one who owns the Mamiya 7 with which I shot this image, he swears by some eccentric English chap in Orange County who has repaired several of his other cameras. But my friend is partial to eccentrics, British ones in particular, so I'm not sure what this says. He's not a Mamiya specialist, however. I can get his name for you if you would like me to. The other suggestion I would have is to give Freestyle a call. They have a list of camera repair shops in the Los Angeles area. They may even have it on-line come to think of it. Good luck Nihat, and thanks again for the comments.