Engine builders/Gurus, I need your help.

paul smart said

a couple of ideas to check look at the inside of the valve cover to see if the rocker is tapping the cover.ive seen this happen.also seeif the rocker shafts are on the properly as they can be switched side to side and flipped upside down and i believe can impede the flow of oil to the head

if a vale cover problem you can get a set of gaskets that are thicker.

just throwing a few ideas out there for ya

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Good point on the valvecover but it appears to be tapping wihout the cover also . As far as the shaft impeding the flow , that won't happen . What happens is the rockers don't get oil to the high stress area where it needs it. It would be a good idea to pull the rockers and shaft and look for galling ?

I don't know if the hughes rocker is an alum body on the steel shaft , bushed , or full roller on the shaft ???