No oil to left side rocker assembly?

Bobby, when you get "all" the pistons to not crash the valves, maybe you can a. have oil in the pan, and b. crank engine over with starter, (spark plugs removed). This way you can monitor oil pressure and trace that problem oil port. Of course you checked that the "hole" in the head gasket, lines up with oil port, NON magnum gasket ? Good Luck, ateam.