Lode51,
It looks like you cleaned the holes in the rocker arms, but when you had the rocker arms off, did you clean the shaft/tube as Hotrod Lincoln asked?
If you did, have you checked/watched the oil flow to the forward rockers at a higher RPM (higher than 1,000)?
Do you have a low pressure engine - 216 or pre-1954 truck 235? How much oil pressure do you show at idle (or, at 1,000 rpm)?
