I've got another question that's just driving me nuts! I had the guys at 4wpw install the 4.56 gears. (Pretty satisfacotry experience with those guys too!) There was always this clunking sound coming from underneath when everything was hot. I thought this would go away when I had everything replaced on the rearend. With the exception of the axles and the carrier, everything is new. I saved the stock carrier because I thought it was a pretty good unit. I'm not sure what it is but I think it's the Eaton Posi or the Gov-Lok. Not sure what the difference is. Well, that turned out to be a mistake. It's still clunking when it gets hot. I put the limited slip lube in it and it still does it. Although it did seem to help. Has anyone had any similar experiences? Should I scrap this differential and redo the axle again? Or is this normal and I should just drive it until it blows up?