I would check the lower balljoints again. I thought mine weren't too bad because a good shake under the tire didn't seem to show any play and there wasn't any steering wheel shake like a lot of other cars get when the ball joints are beat. It clunked pretty good moving along a dirt road but seemed fine on the highway. When I finally got under there by removing the wheel and supporting on the steering knuckle, I could clearly see the play. Quite a difference now that I've changed them.

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.