I was re-adjusting my bike today (stupid growing 14 year old bones) and realized that i could hear, well more like feel the bearings in my crank rotate. It didn't feel quite as smooth as i thought it would. I never noticed this before but then again it has been a while since i sat on a trainer and pedaled as slowly as i did. When i am out on the raod i don't feel it. Could this be a problem?

Im probably going to send the bike in for a setup within the next couple of weeks. But I was just wondering for further reference. Srry about the undescriptive description but im not sure how to word it.

Thanks for any reply.

Peace
Tyler