i tune up my friends quads from time to time for raptor money,and i got a timber wolf in today that has a leaky axel seal,i called and ordered both seals but i haven't started the tear down yet,anybody had this problem yet?what can i expect?all the quads i ever had were chain driven,and what about those drum brakes?any pointers on how to remove the drums? keeping in mind that this quad has been abused , he still wants alot of work done and i am going to be replacing all the brakes, thanks in advance