Had the same problem in my mother's 06 TJ X and tried taking it to the dealer numerous times only to have them replace the steering stabilizer twice cause they are not interested in actually admitting Jeep Wrangler front ends are prone to DW. I replaced the track bar with an adjustable Teraflex one, got a skyjacker steering stabilizer, and took it to an alignment shop so they could set it with their laser alignment machine. Havent had a problem like that since. I did all the repairs and work on my mothers cause she was dealing with chemotherapy so I was driving it around alot and experienced the DW for myself and it was very bad considering it was a less than two years old Jeep at the time. I even took it to the dealership with her and got into a royal argument with them because after two OEM steering stabilizer replacements by the dealer, they tried to say it was it was the roads in Tucson where we lived and that the tires were out of balance and that she needed of all things a new steering stablizer (x3) put in by them for the second time. Since I thought they were full of it but wanted to make sure I took it to the alignment shop, they checked the balance of the wheels and tires, checked for any noticable slack in the control arms or steering system and being only two years old they couldnt find anything wrong with it after I put the adj track bar and skyjacker steering stabilizer in it. On a different note I did have a 6" lifted 98 XJ in the family that we discovered the DW was coming from a combination of bad control arm bushings, a cheap adjustable trackbar, and wheel bearing hubs, although I cant say if one caused the rest or not. I hope you get some good help with, I know how frustrating it can be and is a very big disapointment from a newer vehicle. Im sure you'll get some others posting here that might have better or other ideas on how to look for the problem and track down whats causing it. Just passing on what worked for me.