I recently had a Teraflex 2.5" coil lift w/ teraflex shocks, and a JKS front adjustable trackbar installed on my 2011 2dr JK.

The problem I'm having is when I'm driving and I turn the steering wheel, at the 12 o' clock position there is about 20-25 degrees of deadzone (non-responsiveness from steering wheel to the wheels). It also drifts to the left quite significantly.

I suspect the it's maybe the front trackbar?

 

Hmm, you have a 2dr. That 2.5 usually lifts the front a hair over 3in. Front adj lower ca's may be in your future. Is your front TB centered and torqued to 125 ft lbs? I take it this is a brand new trackbar, not a used one? Also, when installing the lift, did you loosen all the control arms, bounce it up and down and re-torque with the full weight of the jeep on the ground?

 

That was my first thought as well. Have you double checked the torque on both trackbar bolts? Crank them down to 125 ft/lbs, and you should also have someone turn the steering wheel while you are underneath watching both ends.

 

Set your caster... Buy adjustable front lower control arms...