Having a difficult time getting oil pressure on my engineI. I changd the rocker arms and pushrods and try to prime the engine. Are use the long Allan key tool on a drill in reverse while I turned over the engine. At about 290 degrees had some oil coming out of the drivers side rocker shaft (I couldn’t see any coming out of the rockers so I remove the Allen key at the end of the shaft) and then I turned it over more and had lots of oil coming out of the passenger side rocker shaft. Opened the dhafyvthere too

Reassembled everything started the engine still had no oil pressure

I’ve done this a couple times and no pressure. I am not sure what I’m doing wrong