I just got hold of a Zorki 5, but after setting it all up and checking it over, I've found that for some reason the film won't rewind. When I turn the right-hand shutter release (on the frame counter) clockwise, the shutter is disengaged, but the gears inside just won't turn backwards at all. Does anyone have any clue as to what's going on here - and how to fix it???
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