Well, i had a Bronica RF645. Bought it used/mint from KEH, but upon receipt the RF patch wasn't aligned vertically. I shot with it anyway, and got good results, but upon return from travels abroad, i returned it to them to adjust. They sent it back to me in good time.
But, the next time i tried to use the camera, the batteries were dead. I thought somehow the camera had been switched on accidentally while putting it into my bag. I replaced the batteries, and then went away again on another two week working vacation. When i tried to use the camera, the batteries were dead again. Definitely, not a matter of the camera being switched on. I was able to find more batteries the next day, but i lost that one day's opportunities.
Came home, and sent the camera back to KEH. They acknowledged that perhaps something on the circuit board had been compromised during the initial RF adjustment repair. But, they took forever to do anything about it. They sorta lost track of the camera for a while. Then, finally, a month later, they said they had to send it to Tamron to repair, as they couldn't do it themselves. Another month passed. Eventually, i needed the camera for another trip, but they couldn't tell me when to expect it. I never saw that camera again. Even after the third month, and after KEH had made 'compensation,' i don't believe they knew what had happened to the camera. Sad thing, as i really enjoyed both the use and results of that Bronica.
Anyway, that was my experience. Not suggesting what happened to me could happen to you... i'm just sayin'. If i were you and the camera weren't under a KEH warranty, i'd probably go directly to Tamron for a paid repair.
