Sure way to tell if it's your t-case chain slipping is by putting it in 4 low and power braking. If it pops in high range you can bet your chain won't have much life left since there's less torque putting it in a bind.

 

Maybe it is the cv joints....I torethefront down and everything looked good. I'm gonna seal it back up and hammer down.

 

4 low doesn't work for some reason only 4hi. If I pull this case again I'll go back with a manual case ......**** on the clutch pack.

 

Let me know what kind of case you end up with. I've been wanting to ditch my old case as well since I'm already on number two plus I plan on putting some boost to the old z too