Cannondale 2.8 Frame from 1996
I could not get the carbon seatpost (27.2) in even a bit after the minimum insertion line, but that's obviously not enough because the seatpost is 350mm.
So with the help of a friend, we sanded down inside of the seat tube this afternoon with a drill, that is still not very helpful. Finally we were able to get a aluminum seatpost in after greasing it a bit, but I would really like to use my carbon seatpost.
Any ideas on how to take care of this problem?