does anybody know the reason why my truck does this?

[blueb8llz]

test ran the truck again with toe in like -5 degrees in the front and -2 in the back because of the true tracks. still same problem. im starting to think its the servo saver. can you guys do me a favor, turn your truck over and look at the servo saver, the part that breaks in two, does it break/move around at all when you turn your tires from left to right. does it move as one piece? i mean just turn your wheels left to right to show the slop, not enough to actually turn the servo.