I received a M42 adapter today from rainbowimaging for my Fujinon 55mm 1:1.8 lens. For some reason, when I screw the lens all the way onto the adapter, I cannot adjust the aperture ring. On my Fujica SLR (AZ-1) there seems to be a thin spacer ring that keeps a small gap that allows the aperture ring to turn. There is no such thin ring on the adapter. Does anyone have experience with this lens (or similar) and a m 4/3 adapter?