I have an 89 k5 with chevy's "wannabee Dana 44" in the rear. I'm guessing it came stock with 3.73 in there? I run a 3"inch suspension lift and 33" tires. For power I have a built 383 with the TBI. Anyway...when I step on the gas from a stop it almost feels like I'm getting tons of backlash from the rearend before the tires start to move. Aometimes around corners I swear theres slippage. Does this mean I need new gears? Can the rearend just be adjusted? Could it possibly just need to be filled with oil? All of the threads I'm looking at are saying, "don't open it up yourself". I've worked on a ton of stuff on my 4x's over the years but never been inside a diff. Really not sure I want to do the whole, "find a 3/4 axle from the junkyard" thing.