Maybe this will help -
http://www.pelicanparts.com/BMW/tech...7-CV-Axles.htm
Rick, the boot is good, he just needs the clamp to hold and suspects the nub as the culprit that keeps popping the clamp off. What would the nub be for? If he can dremel it off while protecting the boot and the grease from catching the metal shavings, why couldn't he do that?