I had the same problem with the FSA K-Force SB post. Switched to a cut down Velo Orange and love it. Having seaposts from the original Campy on up, the VO is on of the best I have used for micro adjustments. One thing to note is the VO clamp is narrower in the for/aft dimension. If you are fortunate to have your saddle mount near the middle of the rails the narrow clamp will let the rails spring a bit. Great for comfort but not quite as rigid.