definatly not the t case i have welded it very custom and its tight as hell, when i hit deep mud for example theres a dom sound as the front disengages, then the shifter doesnt shift correctly until i wiggle it quite hard, move it back to 2 hi then back to 4 low, basically its as if the ring holding the front output side of the t case gear has slid back on its own under torque and the only thing i am not sure of even though i think i got them in right are the balls that go in there, theres 2 total and one is bigger than the other, could i have got them reversed? it really sucks and im going to a couple events where ill need it to NOT do that in a couple weeks. thanks everyone for the redponces, 6feet