Hey Jason when I had the truck i did a "rally" alignment as I like to call it. really on the truck toe is about the main thing you can do. i set it to 1/4" toe in, using the zimmer tape measure method.
the truck does have some extra camber in it. there are plates, like old chevys, that can be added or removed to change your camber. there was some extra camber put in there, but it was there when i got it so i left it. it also made for better turn in bite.
trucks are bullet proof, not invincible, did you smack any major ruts or something to maybe bend a tie rod. is everything tight under there, tie rods, jam nuts, ect.... it's good rally practice to touch almost every bolt/nut before and after an event. that way in your mind you know everything is tight.
did you do any work to the front end at all. i know different year MM had different tie rods and drag link bars. like that spare stuff i gave you would have to be swapped in fully because things are different between the 2.
some times just laying on the ground looking at stuff will show you what's wrong.
it's a simple steering set up, there are only so many things that can go wrong. i would put my guess on the toe. when i first got the truck i had really bad toe in and started to tare up a set of tires,
also check your wheels bearings.
but, welcome to world of rally, where shit breaks and you got no idea why.
"Rally racing makes a heroin addiction look like a vague craving for something salty"