Poorly Mamiya 7. Self help or have it serviced?
I have a Mamiya 7 that is not showing the changes in framing marks when I change lenses and the range finder operation is clearly "out" as are the lenses out of focus, although at f16 and 30ft it's not as pressing matter as it maybe in the future.
Is this something I fix myself?
If not, to whom do I turn?
Lastly, is there a link / web page that gives me the edge of frame marks for the 80 and 150mm lenses I can reference?