I just spend $600 at a shop to get my Hasselblad body (which broke) with 2 A12 backs which were overlapping frames. I get it back and the body is buttery smooth and doesn't even make noise. The first roll of film I put through it flawless. The next one overlaps 3 frames -same problems as before. I also have an A16 back which has not had overlapping issues, but is now starting. It's getting really frustrating. I had to trespass for a lot of these shots in a spot I'm not willing to again. Is this a back issue, a body issue, a repair issue? Any insight as to why this is occurring? Thanks in advance....Jordan.