Actually I've had very little trouble. The only problem I've had is the seal behind the pulley popped out on me and got lube all over the place. I replaced it and haven't had any further issues.
A cost saving tip for all, use Chicago Rawhide seals as an alternative.
CR-9876 are for the front rotor bearing seals, 2 req'd
CR-9854 are for the rear rotor bearing seals, 2 req'd
CR-12531 are for the snout/nose by the pulley.
