I've done a search and found this to be common. What I am looking for is how far did everyone go when fixing the problem? Upon start up my '03 WR450 weeps coolant from the weeping hole on the right side of the case cover(about 1/2 cup). I am planning on replacing both seals, and bearings. Should I expect to replace the water pump shaft? Any other help would be appreciated. I just bought this unit used, bike is immaculate. Selling the '01 KTM 400 EXC so this will be my new steed for the next few seasons to come.