.....When I restored my car all those screws where rusted and frozen......did the PO used crappy screws or did Mercedes use inferior stuff (Heaven forbid....) I had a hell of a time removing and drilling out sometimes heating up and .......you know the drill ( yea and that to....)
Anyway, original or not I installed all that trim with high grade stainless steel screws, washers lock washers, or nylocks in some places, and nuts.
CHEERS !
WITT !