Got my beloved Mamiya 7 back from Mamiya America today after CLA and rangefinder adjustment. Quickly loaded up a roll of 120 and went to town, testing focus at max aperture with each of my three lenses (50, 80, 150). Noticed that film advance was tougher than usual, but only when the counter didn't stop at 10 at roll's end did I notice that the pressure plate was set to 220! Guess the technician at Mamiya put it there--I've never shot 220 in this camera. Is this alone enough to account for alterations in focus plane or lack of sharpness in all the images? It is barely there, if at all, with the 50 (a laceratingly sharp lens); perceptible as back-focus (but sharp in the "wrong" plane) with the 80; and overall unsharpness with the 150. On one hand it makes sense--220 is thinner and has no paper backing; but OTOH, the film plane is determined by the film gate, so what should it matter? So when I shoot a roll of 120 tomorrow with the pressure plate set correctly, will my problem be resolved or will I have to part with my beauty again for two weeks' hiatus? I'm really trying to convince myself it'll all be better with the proper pressure-plate setting! Thanks all.