[pat in Santa Cruz]

a common problem.

Check everything, like Mike says.

What has not been mentioned yet is the notorious rubber radius ball repair kit. When the rubber gets bad, they cause wobble. The cure is the correct, original design, new (as in not a worn junk part) radius ball kit. If the cups on that touch when its all bolted up, then the ball is worn, requiring a shim, or to be welded up and filed round to the original 1.5 inch diameter. Most common in my experience, is loose pittman arm or steering box mounting bolts. But, as said it could be anything or a combination of several things.