Driveline issue

So I've read over several threads and haven't found a whole lot that's close to my issue, I have a 1999 XJ 2dr 5spd w/231 H&T SYE installed, just put an Adams CV drive shaft on. sitting at 4.5" lift in the rear w and IRO Lift and boomerang shackles. My issue is I have a slight pulsing vibration from about 40-60mph, and a rougher vibration around 25-30mph but it usually only does it on deceleration or when I push in the clutch, I was thinking about putting my new trans mount on to see if that would help, if anyone has any ideas id appreciate it.
Hasta

Check front driveshaft for play/binding, check motor mounts. Did you shim or verify rear driveshaft angles?

I had 2 degree shims in it when I had just the t-case drop, but pulled them yesterday, and driveshaft is about 18 degrees measured in the middle

What is your axle yoke? Ideally 2-3 degrees down from the driveshaft is what you want.

sinat01 said:

I had 2 degree shims in it ...

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So now you have no shims at all ? If you have an SYE installed you need to have rear axle shims also. You will need to measure your drive line angles and order some shims.

Raed this -> http://www.4xshaft.com/driveline101.asp

I didn't know I needed em till I took them out, I had 2 degree el cheepo aluminum shims and had some vibs still, I need to measure and order itll prolly end up with 4 or 6 degree shims im thinking