Attention: TDR Forum Junkies 
For some of you that have been looking at trac bars to solve your steering problems with no success, you might try this TSB. This isn't new news, but I think the trac bar gets touted as the catch-all for steering problems, and overshadows the bearing and gear adjustments that can be done to help the steering.
I did the bearing adjustment first. The instructions aren't very applicable to the procedure I found. They say to bottom out the bearing adjuster firmly, and back off 9mm. One man's 'bottom firmly' may be another's hand tight. So I tightened it as much as a could, and backed off a smidge. Then reinstalled the lockring. I didn't have a spanner wrench and had to rig up something involving some 10/32 screws and a big nut, and turn it with channel locks.
I also tightened the worm gear adjuster 1/4 turn. I probably could have only gone 1/8th of a turn, as my steering is a tiny bit sticky now.
But, the results are good. The steering tightened up quite a bit. I didn't test the truck between procedures, so I don't know what had more effect.
I did the bearing adjustment first. The instructions aren't very applicable to the procedure I found. They say to bottom out the bearing adjuster firmly, and back off 9mm. One man's 'bottom firmly' may be another's hand tight. So I tightened it as much as a could, and backed off a smidge. Then reinstalled the lockring. I didn't have a spanner wrench and had to rig up something involving some 10/32 screws and a big nut, and turn it with channel locks.
I also tightened the worm gear adjuster 1/4 turn. I probably could have only gone 1/8th of a turn, as my steering is a tiny bit sticky now.
But, the results are good. The steering tightened up quite a bit. I didn't test the truck between procedures, so I don't know what had more effect.
