I just got a Pro Stealth EVO Monocoque Carbon Seatpost - White (27.2mm x 350mm). I took out my FSA K-Force Light Carbon Seat Post to put in my old bike. I cleaned the inside of the seat tube to get the carbon paste out. When I tried to put it in to make sure it would fit it was very snug. I figured if I just used carbon paste at the clamp area and installed it, there would be no way to get the seatpost out in the future not to mention straining the carbon fibers. I measured the O.D. with digital caliper and the top 2/3's of seatpost was right at 27.2mm all the way around. But the bottom 1/3 measures 27.5mm in places. The seatpost wasn't cut down and has no burs. I know there is a lot of debate greasing an aluminum seat tube with carbon seatposts, but i'm thinking about putting some Phil Wood waterproof grease inside the seat tube below the clamping area and carbon paste around the clamping area. The O.D. might be because they used a little too much clear coat during the manufacturing process. I don't really want to sand the post upsetting the fibers. Anyone have any better ideas? By the way, I did try an alloy post I had on hand and it inserted easily. It is an almost new frame with no damages.