So I have a Mamiya 7 with the 35mm Panoramic Adapter, but the two times I've used it I've gotten only ten shots on the roll. Everything works as I'd expect it to, then after the tenth shot the film advance lever doesn't stop. It keeps winding all the way up to 16 and stops there. Both rolls of film were 36 exposure fujichrome, and I've already checked that the film pressure plate is in the 220/135 position. Is there anything anyone can think of to explain this, or is this a common occurrence with this setup?