I don't know if I have to pull the tranny out or not, I could tell right there in the store (yeah, I got bored today) that something inside is notchy, but I'd bet it's only one tooth on one of the gears. I s'pose that pulling the tranny out of the truck would make it apparent real quick if the problem lies with it or not, if the resistance is gone with it out of the truck, then it could be a diff or something.

How would the speed compare to the 9L's right now? I think i'm at least tapping 40, if not in the mid 40's. I'd want the same kind of throttle response as my Lehner 2800xl though, that thing spools up like nothing and BOOGIES.