Hopefully it's something easy to fix, and not too expensive. Almost impossible to tell without getting under the Jeep and checking torque, play in the wheel bearings, toe, caster, etc.
When you installed the lift, did you loosen both trackbars and all eight control arms, then tighten them to spec after the Jeep was on the ground? If not, you might just have some binding in one of your TB or CA bushings...which is usually what causes DW, down the road.
All trackbars and control arms should be torqued to 125 ft-lbs, except front upper control arms, which should be 75.
The adjustable track bar will only re-center your axle, not your steering. Sounds to me like you need to center your steering. If you tried that and it's not working, then something is wrong with your lift...one wheel should not be higher than the other, unless something is bent, missing, or not installed properly.
It might help to look at the undercarriage photo in the thread below, and compare it to yours. That way maybe any odd deviations or omissions will jump out at you.