With my rear driveshaft off the other day I found that the rear t-case output has about 1/4 turn of rotational slop. Side to side and up and down are nice and snug. Since I bought the truck with the part-time kit already installed, I'm unsure of just how much slop is normal and the clunk it makes when going into drive or reverse is a concern. The axle pinion has a bit of slop but only about 1/3 of the t-case slop. I'm worried that this much play could be a sign of wear and contribute to u-joint failure. Any opinions?