[charlie105]

The first thing I noticed reading your post was the mention of a " roll pin" in the drive shaft. I am reasonably sure it should be a solid "dowel pin". I did use a roll pin once on my narrow frame 105, and it sheared within a week. Maybe some better informed members will offer their insight ? I replaced my flex disc joint with a NOS part, and don't recall if it deformed or not. Good Luck, and happy trails. Steve (yeah tha's my name too)