I've had a *** *** noise for about a month now, coming from my rear end area. Pulled the cover off, the oil didn't have any metal in it and I turn the gears, from what I could see, everything looked good as far as teeth. I'm thinking bearings. I need help with what brand to use. can't find national or timken for my 11.5. Has anyone used Motive , Dorman or USA standard brand in there trucks. Also if anyone thinks it might be something else. Any help would be appreciated.