Awsome, well I will go ahead and do that :) I did that to my revo, and it helped for a few runs with a tight slipper. I read a thread on the mugen forums where I guess a rep went over how to properly setup a diff on a 6t, it was tedious, he was shimming all the way around, assembleing, disassemleing, it was controlled chaos heheh. If its just the pinion then thats uber easy heheh :)
Also I couldnt get 7k diff fluid, I cant remember what I bought off hand, even tho I should know, but Im tired and stuck in the office so when I get home I will letchoo know Ive got.