Question to all - my wifes 1990 300SL 129 (built 11/89) has broken vent levers that control the air deflection on both ends of the dash. This looks like a poorly designed part and probably trouble for other owners. Can these levers be replaced (part #?) or do the entire units have to be replaced. Also, I need some suggestions on how to remove them. Thanks, Craig

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90 300SL Pearl Gray
92 300CE Smoke Silver