It seems to happen of and on through out my rides. When I ride with others I find a groove or cadence and then seem to loose it. I have ordered a computer to watch my true cadence, I hope that helps. I just feel like a nerd on the bike, not smooth or beautiful in any way. Plus people pass me like crazy! Because I am a life long swimmer I am out of the water early on the tri's, but bike I am passed by everyone! I catch up on the run. So I want to build the bike. I know much of it is time in the saddle.