Well it's starting to slip pretty good, but I can't decide if its my TC or my clutches. I got on it kinda hard with the box on 5x5, which is where it stays, pulling out onto the road this morning and the tranny was slipping. It felt liked it wanted to grab a couple times, but couldn't and then when it shifted into 2nd I believe, it seemed to grab. Is that my TC going or is it something else? I didn't think to look at my RPMs. I hope its my TC and not something else.

What do you guys think? Other than I need a new tranny.....:blah:

Man that seems like the exact problem I just started having last hour!
I just rebuilt my trany with a ATS 5 Star and a shift kit.

Yup, I have pretty much same mods as you, and I just made one 15 second quarter mile run in 4X4, now my stock tranny is just about dead! I had to let off for it to shift into third and fourth and I still got 15.96 at 83MPH! Oh well, live and learn.