Pro Comp
I purchased 2 sets of BBC Pro Comp polished with ball milled top cast valve covers. One set fit perfect. The other set leaked from the get go. Tryed 3 types of gaskets including the ones with the steel inside. They were 1/4"+ too short front to back and the gaskets just had no seal surface between the head and the covers. Spent more on gaskets and time than they were worth. I keep them on my wall to remind me.
If they can't make 2 sets of valve covers a like, what could they make correctly?