small block engine priming

this is a fresh rebuild. cam bearings are lined up correctly.. as I said in original post I have an oil pressure gauge hooked up and it reading 75-85 psi oil pressure.. when I swap out stock rockers it oils just fine, but when I put these on i get minimum oil, but I have also read that these style rockers don't oil as much as a stock rocker system either.. all block plugs are also in place.. other than the rockers and shafts everything else is brand new...pistons, rings, bearings, seals, cam, lifters, heads, intake