Along that same line, my wagons' steering wheel shakes pretty good from side to side when I hit a bump in the road. I have replaced the front sway bar bushings, but no difference. Should I just start replacing everything from the steering box down?

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95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K