Setting pinion angle question

[2500avalanche]

So, I am in the middle of checking/setting pinion angle. I am having difficulty understanding how to do it successfully. Yes, I have a gauge, YES I can search on google/youtube, but my measurements are as follows.
Harmonic Balancer (-4.5), Drive Shaft (+.3), Rear Pinion ((-5.8).
Now my truck is lowered on coil overs as well as rear bel tech springs with NO WEDGES. I can put the factory wedges in it to check. My understanding is I can not be over 3 degrees of difference in angles, but obviously I am. I am not getting vibration until it goes above 80.
Now, I read I can change the angle of the engine by adding washers to the tranny mount. This will bring me in the -3 range, but I am not sure if that is correct for this truck. Also, I am wondering about the factory wedge. I see the JTR offer a 2 degree wedge. This would bring me in the 3 range for the rear, and washers for the front, but the drive shaft would be in the negative.
I am going to check those angles again with an old fashion dial. Any hints that would be great

 

[DaveP's Ghost]

The angles that are measured and that matter are at the two u-joints. What angle the drive shaft is to any other reference such as the crankshaft, frame, floor pan, ground, etc is irrelevant.

Up to 1 degree difference is allowable. Not 3. If I am interpreting your measurements correctly, you have 4.2 at the front joint and 5.2 at the rear joint. You are at the maximum 1 degree allowed. It will vibrate less, and u-joints will last longer if you can reduce the angles at both joints, and the difference between them. I attempt to get about 1/2 degree difference max.

 

[2500avalanche]

Thank you for the response and talking to me about it. I am going to take the measurements as suggested, and see what we have! Again, thank you for your time and assistance with this!