bump steer

both idler and pitman arms are new. mine has the thru bolt. maybe my k frame has been changed. I have 11/16" firm feel tie rods, cap auto adjustable ucas and cap adjust strut rods. all ball joints are new. current alignment setting is 3degree caster, -1 camber, 1/16 toe in, lcas have been rebuilt and new firm feel 1" torsion bars. 73+ spindles and brakes. 1 1/16 front swaybar. hole in k frame for the idler hasn't been modified.

When you say thru bolt, does it have a mount with a hole in it on the top and bottom of the idler?

The basic alighnment numbers look good. Did it drive like that before you did all those upgrades.