I'm confused. I has my rockers arms off for a valve seal job. Once put back on, I decided to check a valve that was clacking so I fired it up without the valve cover on. The firewall half of the rocker was oiling perfect. The radiator half only had 2 of the six rockers oiling, and they were barely doing it. Even after 4 or 5 minutes. I pulled the rocker arms off to check for plugged holes etc. Everything was clean and perfect. Any thoughts before I put it all back together (AGAIN)!