HELP!!! Hughes Retro Fit Roller Lifters Problems

Nice pump. No doubt it is making pressure but the flow is not going where it should and thus the high pressure when on the pump. What has me totally baffled is you saying that the rockers are getting oil when you prime the engine with the cam holes aligned.

Are there any other oil circuits that are "timed" like the cam holes? Can the cam walk when the engine runs and the shift moves the cam holes away from the bearing holes? You do have the cam retainer installed and the cam locked down tight, don't you? If the intake is off you might check to see if the cam can be moved forward / aft.