Also consider that there may be play in the steering box.

Have someone slowly turn the steering wheel and observe the lag before the pitman arm moves.

You can adjust out most of the steering box play.

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles