Well, gave up on the oe beadlock wheels, the offset and tire size wasn't working out. So it is now wearing Raceline Rogue 17x8.5 ET 35 wheels with the Toyo Open Country R/T trails in 35/12.5 r17.
The angles of both joints on the aft driveshaft will increase unless your lift blocks are tapered or you lower the carrier bearing. But lowering the carrier bearing will increase the front joint angle. Did you check to see if your blocks are tapered? And that they aren't backwards? If they are...
You cannot maintain angles and lift the truck. They will increase, all you can do is spread them evenly over all joints and make them cancel out like it was stock.
you could measure angles on the shaft body but the bearing caps are more accurate. I would measure all the caps( just like you did) on every joint that is vertical. Then rotate the driveshaft so all the others are then vertical too and measure. And the difference between the 2 measurements on...