I just made another post in which I mentioned my wife borrowed a bike and I'd like to fix it up before returning it. One problem she had was the seatpost slipped down while riding. It's probably my fault, it's a carbon post and I was worried about over-tightening it. I did notice, however, that the post was VERY hard to move up and down. I loosened the bolt on the collar all the way but I'm having a very hard time removing the post just to take it to a bike shop to get the nicks checked out. I've never dealt with a carbon post (aluminum frame, Tirrenno Razzo 3.0) but I wonder if it should be that tight? It looks like it's leaving lots of tiny scratches as I try to remove the post. Is it possible it's too small for the frame just by a little bit? Obviously it can somewhat work, but I wonder if that was part of the problem. Most of the grip just comes from it being in the frame so I thought it was tightened enough.