Had this posted in my build thread but didn't get any feedback. Hopefully I can get some input from those of you with some experience in this thing. Background: I swapped a Mercedes diesel into my 94 T100 (link in my sig). the transmission moved backwards 5" and up 1" to fit everything. I replicated the tipped back angle of 3.4° for the transmission. My rear driveshaft is a two piece as shown below. The piece after the center support bearing remained unchanged, and the piece between the center support and the transmission was shortened 5" (and balanced). My u joint angle (12.5° - 3.4°, ~9°) out of the transmission is now *I believe* causing me a vibration in the 20-30mph range, noticed on acceleration. Truck did not have this vibration prior to the swap, and all of the u joint condition appear in good condition. I believe the correct plan of action is to raise the center support bearing (by way of cutting the cross member and shifting it up what I would guess to be 1", and then rewelding). Before I start that fun job...I was hoping to get some confirmation from those of you who have done something like this before. Feedback/any options are welcome (although I'd prefer not to buy a brand new single piece driveshaft if I can make the current parts work).