Thanks for the replies....
No, I haven't had the tires checked yet, problem being, I haven't found a shop that has both the Haweka adapter and a GSP9700 balancer (http://www.gadgetonline.com/vibration.htm)
Also, the places that have a GSP9700 want around 15 bucks a tire to check them, before I do that I wanted to make sure it's not a problem with the rack and pinion.
Is it normal to be loose from side to side when the truck is on the lift. The bearings feel tight when I try to move the tire up and down. Also, would rack and pinion cause vibration only at certain speeds?

Thanks, Vern