So I picked up a sweet little Yashica FX-103 with the ML 50 1.9 today at the thrift shop and it seems to be doing something weird with the mirror. If I am correct, this lens mount is correct for the camera - but when focusing out past 2 meters, it hangs on the mirror! I have taken it apart as I first thought it was sticky seals, but it's clearly the mirror hanging on the lens. Could the mirror have slipped down out of place by a few millimeters? It seems very firmly in place, not loose at all. Or could it be the lens (I don't have another C/Y mount here to try)? I spent a whopping $10 on this, but it came in the full kit with leather bag (in fantastic shape), manuals, and a flash that looks like it's never been touched. Shutter seems fine - tested it out with no lens on at all speeds. What should I do?