Rocker shaft oil passage?

Ok thanks, images I've seen showed side view looked like straight vertical passage, i am running into the bottom of the bolt thread boss. Running a drill through it (as I've seen mentioned) must be with the head off. And yes fat finger typo, 10" long screwdriver. Thinking about it, actual run time is less than 5 minutes. Now that we have a functioning water pump and radiator we are going to try running back and forth in the drive a bit see what we get. Still no oil at all & I'll pull the rocker assembly completely off and proceed. Thanks again, makes sense.