My Mamiya 6 has a winder which has failed and I was going to ship it to Mamiya in New York for cla and repair. I haven't spoken with them as yet, however. If a winder fix is available elsewhere I'd be very interested in finding out about it. I can deliver to SK Grimes in Rhode Island personally next week. I think I would still have Mamiya hdqtrs. do the cla unless there is reason to prefer Grimes.