i remeber reading a detailed topic on here on how to mount the ana lens cuz i printed it out and took it home but this was a long time ago a yr or so but im sure it can still be found.
I just rented a lens from a place in Seattle. The snug screw seems to be stripped. I assume you shouldn't be able to pull the screw out? I cannot tighten the screw to get the lens off the camera.