Okay... Easy enough
Have you tried to spin the tranny without the spur gear on the slipper shaft? To remove the gear, just take out the two buttonhead screws out of the spur. Try spinning it then. I tried spinning it just by the spur gear, but did not take the spur itself off. I'll see if that makes a difference, but it was still fairly tight even just with the spur.
How about with the cvd's out of the drive cups? No, thought the same thing. Brand new MIP CVD's.
Once it's isolated down to the gearbox, did you put ANY shims in the transmission? It should NOT need any shims at all. I can't recall off the top of my head, but this may the reason.
Did you put bearings in the trans case? There should be a total of 6 (not counting the two in the diff). Yes, brand new bearings with fresh bearing oil.
Did you check the bearings for smoothness? Yes.
Hope that helps ya track it down... Absolutely! Thanks a ton! It may be the shims you mentioned.