AgX, thanks again; I have emailed them with some photographs and I look forward to their reply.

I have since looked at a number of images of the lens online since Fixcinator posted the image above; I realize I cannot see the difference from my lens and I realize I do not really know what I am looking for. I was told by CRIS that the rear seal was missing. What got this going for me is that the focus mechanism is rough and there seems to be something loose inside the lens.