I wondered about this all along, but as you said the following two statements, I didn't question it!The oil Port on the head needed to be aligned to a hole in the rocker arm shaft. If you don't turn the rocker arm shaft just right the oil is not fed into the assembly.
J03bota said:The head and brand new valve train was rebuilt by a very reputable machine shop.
Glad you have so oil flow now!After seeing the dry running rocker arm assembly and knowing that this very same problem existed before I rebuilt the engine ....