put my lsd + 4.3 in yesterday... it reversed ok... but when u try drive forward makes some insanely gay winding/grinding sound in the rear when ur in 1st and it barely even moves, u can take ur foot off the clutch and press throttle and it still revs,i checked the axle teeth to see if that was grinding maybe like different diff centre size but i havnt seen any damage, what could it be ?