The 2 aperture levers do not move all theway anymore. There are 3 pics here http://picasaweb.google.com/anmol.mishra/Zenzanon# First pic shows f5.6 Second pic shows the shutter at that aperture. Note that the first shutter is at 5.6 while the second one is closed off. Third pic shows the shutter at wide open aperture. Note that the first shutter is open while the second one is still closed. I reassembled the lens - and I know I did it right as the infinity aligns with the marker. Also, I can change the iris. Also I used up ALL the screws so its all great. However, now there seems to be 2x iris'es, one which is permanently closed and the other that can open and close as needed. So no light is entering my lens at all. Any idea what I may have done ? There is a small part of a spring that may have fallen from this assembly as well.