vibrations after leafspring upgrade

Hey guys, I've been lurking for a while now. I just bought my 2018 tacoma offroad back in December and it came with king offroad racing front and rear suspension and icon aal pack. Last weekend I upgraded just the leafsprings to deaver stage 3 leaf springs and now have a noticeable vibration accelerating to 25ish mpg, and when decelerating it starts at about 15 mph and gets very noticeable at 5-10 mph. The vibrations are also the same in 2wd and 4wd so I don't think a clamshell bushing would fix it.
So I didn't realize it was a thing before to check driveshaft angles because there were zero vibrations before. (I also realized while doing all this that it already had about a 1/4" shim on the carrier bearing)
So i bought a digital angle finder and zeroed it out on the Transfer case flange.
Then I put it on the first shaft and it read 5°
Which means my first pinion angle is also 5°
Then I put it on the rear shaft and it measured 7.2°
Which means my middle pinion angle is 2.2°
Lastly I zeroed it out on the rear diff flange and put it back on the second driveshaft and it read 8.2°
So that tells me my rear pinion is 8.2°

So I know I need to put a degreed shim under the leaf springs but I'm just not sure what it's supposed to match. I remember reading on here I think that the rear pinion angle is supposed to match the angle of the first drifeshaft which would mean I need a 3° shim to make it 5.2°. But I also thought I remembered reading that the pinion angles need to be less than 3° Which would mean that I need a 6° shim. So I'm just a little confused as to what's correct. Thanks for everything guys

 

I see no one has answered in here yet. Let’s see if I can help you out some. I’m sure other will chime in an make their assessments.
*Usually* the good rule of thumb to use is 1 degree shim for each inch of lift. For example, I personally used a 3 degree shim under my HD Dakar’s which netted me 3 inches of lift. By adding the 3 degree shim, I have zero issues or vibrations. Also, no CB drop was necessary for me anyway. Other have different experiences as every truck is slightly different. Anyway, hope this helps. Take care.

 

https://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml

Stroll down to 2 piece driveshaft setups. Good luck