Used pos junkyard engine. Factory non-adjustable rockers in what appears to be decent shape. 0.70 restrictors, used oil pump that I pulled apart and tightened some clearances.
Doing a pre oil big 1/2 arm breaker drill. 10W40 oil 40 psi on the gauge, PLENTY of oil from the rockers/shafts except for a couple #2 exhaust and another on # 3. I rolled the engine over while priming as well thinking maybe it might help. Shafts are in the correct orientation, no galling, holes look open and clear rockers look the same.
Why? Oil is obviously going along the entire shaft holes are open and wet with oil on the shaft but not flowing from the rockers like the others.
I know the answer is pull everything apart or replace with new but there is no reason even worn parts shouldn't be flowing oil. Excessive clearance on the other rockers and oil is taking path of least resistance is only thing I can think of. But I've seen rockers and shafts in much worse shape that worked fine.
Ill probably throw another set on and see what happens.