Stainless steel is very hard and aluminum is very soft. Those scratches are not witness marks from any contact. All you might see if there was contact is some aluminum discoloration at the very outer tip of the rocker and a polished spot on the inside of the valve cover. I see neither.
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Mick Batson
1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress.
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