Posted this in my build thread as a respose to your DW problem but here it is in yours...\
Jack up the front of you truck and get the tires off the ground and put the axle on jack stands then take your front wheels and try to move them side to side with your hands, did that to mine and found what my problem was, which was my trackbar not being tight enough to the frame mount. If you find nothing, then its something that is flexing really baddly that only the force of the truck can do. Check your castor angle too, you may not have enough, I did see that your upper arms werent adjustable, I have heard of a guy that was off by 1.5 degrees on his jeep and it was causing a DW. Just be sure to check EVERYTHING that touches the front axle and that holds it on. I have also heard that bad side walls on tires can cause this too.
DW is the scariest shit to happen while driving and what is worse when you go to slam on the brakes to stop and somebody is right on your ass and almost rear ends you. Mine was so bad that I would go over the slightest bump/depression in the road and it would do it. Generally happens when the passenger side tire hits a bump first, why Im not sure.
Hope this helps you out.
