i have a 305 v6 in the engine stand. oil and filter installed. right head and rocker shaft installed. left head off. i spin the oil pump clockwise with a drill. with gages at the filter reading 60# and reading pressure at the right front top of block reading 50#. I have no. oil up through the left side of block stud port. no oil up to the right rocker shaft. need help. i have found at tear down a small tapperd plug in the bottem of pan. i have taken the small plug to different engine builders. no help. [email protected] bill thanks