The pattern was great when I built it, as for the specs, I dont remember off the top of my head, but I remember that I set them within the high side of the new bearing range in the FSM I was working out of, that I know for sure.
I KNEW I should have written that crap down... 
If I tear it apart and it is indeed not enough pre-load on the pinion bearings, can I just torque the nut some more since its got the solid spacer then recheck the pattern and backlash while its out? Or should I pull the carrier and re-check the pinion pre-load the "right" way?
I really just dont want to fight with the carrier bearings adjusters to set the backlash again 
~T.J.
EDIT: I guess this is kinda stupid asking you to speculate whats wrong with the truck, I need to just pull it out and find out. Im sure once I get in there I'll remember it more-so. Now that Ive re-read the FSM, Im even starting to remember it. I posted the original post in a bit of a huff since the truck had about 10 things go wrong with it at once.
RE-EDIT: Since its got the solid spacer, it could be that I dont have it shimmed right OR the nut just wasnt tightened down enough, right? So, whats the torque spec for the pinion nut with the solid spacer? I can just recheck that, and if thats lose, tighten it. If its tight, then I know I need to reshim it, right?