hi ive just purchased a yz 250 2002 and only ridden about half and hour when i got it home i noticed grey milky oil cmin from a breather pipe that seems 2 be cmin from the side of the head but think it is the gearbox breather pipe is this the waterpump do u think or smething more sinister as im a bit worried ringin up dealership 2moro about it but wanted a second opinon cos i dont trust these buggars thanks....plus it had a buckled rim :(