Thanks guys.
For the first time ever, I got so mad at it the other day, that I wanted to sell it. (Even though I NEVER would)
Ever since I went to 4.56, I've had a bad vibe from the front driveshaft. It is a BAD harmonic vibration that goes away when the shaft is removed. The rear is fine, and I can cruise up to 70 no prob. I just rebuilt another front shaft hoping to fix it, I put it in, and realized that the slip yoke is toast. I didn't notice until it was bolted up.
I took it on the freeway, and the vibes were as bad as ever. i also checked the pinion angle, adjusted it, and it did not help. Both the pinion and t case yoke are tight.
I got fed up, and called Tom Woods, and I have a brand new, custom, built to my 31.75 inch spec shaft coming to me this week. It doesn't have the smooth slip yoke like stock, it has a heavy duty full length spline setup, with a rubber boot. This is much stonger than the stock crap. They said this design is best for climates like mine. (Wet)
This has pushed the tires back a couple weeks, but I should have them after new years.