With an adjustable track bar you need to first center the axle. Once the axle is centered the steering wheel can be centered.

 

I don't think I understood exactly how to center the axel.

 

Your springs will tell you if you are out of center. If they both bow to one side your axle is not centered. The issue is centering your axle only centers it at the height the jeep sits when it is centered. Any flex on the passenger side or complete up and down movement will cause variations in axle location.

Extend a level off of the exact same point from both sides of the frame (level bubble, vertical orientation). Take a measurement to something on the axle that is equally identical. If the measurements are different, you arent centered.

The adustable track bar is likely longer than the factory because it is used on lifted vehicles. With only 2.5" of lift you are probably okay as it sits.

I'm not a fan of adjustable track bars. A factory bar gets the job done. If you go over 3" of lift, add a track bar relocation bracket and a drag link flip. It will keep your steering geometry aligned. The track bar and drag link should always be on the same horizontal plane.

 

Thanks for help