i recently cleaned up my chain, and now when i am riding i feel a vibration around the crank. if i get off and roll it around, i can feel it up to my saddle when it does it. it rolls smooth up to a point and then i will feel the vibration and then it will be smooth again. i also feel it when i am trackstanding. i think it is around the trackstanding position where the vibration is felt. my chainline is straight. everything is tight. i am not sure what the deal is.