Dont run the engine any more, I suggest pulling the dist and intermediate shaft, and prime it up with a drill, have some one roll the engine over with a breaker bar while priming, make sure you oil flowing from the rocker arms before making it down the road again.
There shouldn't be no reason not to have oil to the rockers if the other in the same shaft have oil, only explanation is blockage as other have said.


Is the rockers banana grooved? Now would be a good time to do so, doesn't take long with a chain saw file.