Well I found out after pulling the rear axles that my brake drums and shoes are oil drenched due to the rear axle seals leaking. I beleive this is the cause for the truck pulling to the right when braking. Sadly I replaced these seals and shoes 13 k miles ago. Obviously there is a problem. I think the area on the axle tube where the seal rides must be wore too much for the seal to work. Please tell me there is a repair kit with a sleeve, instead of replacing the whole rearend.