Check the anti-sway bar bushings first (frame and ends).

Next, have someone turn the wheel back and forth over center (just slight pressure to each side) and look for play in the joints. Work through the steering system beginning with the steering box, the pitman arm joint, idler arm joint, tie-rod ends, and ball joints. If you find any slack at all, you may have found the culprit.

Good luck,
Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum