Had new brakes and rotors installed on my truck last week. Now the passenger side axle is leaking. Shop that did the repair said this was normal because they had to pull the axle to replace the rotors. I'm no mechanic but this doesn't seem right to me. Put the truck in 4x4Hi 2 days later and it started hopping violently while turning. Took out of 4x4 and still have some hop while turning and a rubbing noise. Any thoughts. Thanks