No joke, I feel pretty dumb right now.
I've been fighting that driveline vibe for ever...
Pulled the front shaft today..... Its smooth as stock. HAHA
And it's not that I havent though about this. I drove it in front wheel drive (no rear shaft) and there wasn't any vibes. There fore, I figured the rear was the problem, but in this case I guess not.I think this is because the front driveshaft was under load, thus not pulsating like it does while spinning statically.
Looks like the front ds yoke at the transfer case is binding, so Im going to rebuild it, and get it balanced at the shop near me.
Im pretty freaking happy, cause I was about to shell out 500 bucks on a new aa sye and a TW shaft. I'll just run this till it breaks.