This probably belongs in a different forum but since I started it and got so many helpful responses I will continue here with the Cannondale.
After many years of fighting European frames with the installation of seat-posts and handle-bar stems, I find it refreshing to be able to just slip them in to the Cannondale. No muss, no fuss, no scaring. In fact, no marks at all. Fits like it was made for them.
I must be doing something wrong!
Thanks all.