I don't know if this will be any help. I just went out and looked at some stuff in the almost junk pile. On a rocker set with the stamped steel rockers all six stands have 3 holes in the bottom, two for bolts and one that could align with an oil galley hole in the head. All have bosses on the top but only 2 are drilled. The front one is drilled and has a brass screw head plug in it. The 4th one is drilled and appears to have had a tube pressed onto it. It is open now. Looking at a head only the front stand has an oil hole under it. The only place the rockers can get oil is from the front stand. How it gets to the others I don't know or why #4 would need a way to get rid of oil. Oil would have to flow along the shaft to reach the others. Maybe I'm not seeing something. It's been a long time since I had to think about this.
