Here is what I started with. Sorry for the crappy representation, but its what I have to work with. All angles were read at the flange face both on the diff and the trans.
View attachment 1715738889
Note: The 2.4* is POSITIVE 1* from the drive line angle. I threw some 6* shims at it to make it -5*. Didnt help, but introduced vibration at highway speeds. I swapped out the 6* shims for some 2* shims to make it -1*. No change to the shudder, but the highway is quite pleasant now.
From the OP, the shudder is at take-off only when under a load. I.E. a hill.
