I have read that you should not put a drop pitman arm on a TJ, that it will cause bump steer. Did you install new tires with the lift. When I lifted mine the alignment was the problem I had anlong with the steering stabilizer was loose. With the 33's I have some issues when the are not balanced.
'06 X with 3.73's, 2" BB, 1" body lift, 33" Pro Comp Xtreme Mud Terrians, Protofab front bumper with PIAA lights, Olympic rear bumper with tire swing, rock sliders, Durabak liner, XRC8 Winch