Thanks for answering. I have the NOS type two piece clamp 2808399. I thought it was wrong as it didn`t match the original but now I know. I did buy a reproduction type clamp off eBay that match's the original which looks harder to install. I just couldn`t see how it stayed in place once it was installed? Is it the plastic numbs that keeps it centered? or is it just the friction from the rubber pad once tight from the clamp?