Hello. Another day another question: ). This one is concerning my engine build. The Haynes manual states that the piston crown will have a x mark showing orientation to front of engine. My replacement piston have no mark. I had made a sharpie mark on my connecting rod for front. Well my engine shop gave my con rods a clean and no more sharpie mark : ). Connecting rods have a small oil passage hole opening on one side only. My engine builder thinks this oil hole should face towards the camshaft side of the engine. Just want to confirm this is the proper assumption. Thanks. Tom