I have a 2003 CR250 for a little over a year that I ride on the weekends but never have raced. The problem is that I have gone through 4 sets of seals already. I dont know what the problem is!! I try to clean the down tubes after every ride but they seem to leak after every couple months. I am using genuine honda seals and I've looked over the tubes and don't see any scratches or nicks. Do you guys have any advice?