Re: Finished TC/Diff Fluid Change... still problems!
If you have Quadra Drive you defenitely need the limited slip additive/friction modifier. When you make a turn, the inner wheel travels less distance then the outher wheel. The Vari-Loc inside the diff will do its job and will lock both wheels together due to the speed difference. Ofcourse this will not work out well and one or both wheels will start slipping and make strange noises. The tighter the turn, the bigger the effect. The limited slip additive will, as the name already states, allow a limited amount of slip inside the Vari-loc, preventing the wheel slip.
After adding the limited slip additive you have to make some tight turns or 8's to get the additive inside the Vari-loc and then it should be ok, will not take days to function.
The chatter at 1400 rpm............ is it really engine rpm related and not vehicle speed? Which fluid did you use for the T-case?