I ahve a 2003 yz450f and just yesterday after washing and preping my bike for this weekends race i noticed when i spun the wheel that the rotor would go up then down at a certain point. Then i watched my tire and it seemed to drop down almost and to the right. I am having my wheel tuned today after school. Thats what yamaha thinks is wrong because i havnt had any crashes except the one where i bent my sub-frame and the wheel never hit the ground hard when that happened. Do you all agree with yamaha? Plus i was doing the spokes wrong?.