Oil flow problem on initial prime

Maw, when you get it back together, turn the crank a couple of degrees at a time untill you vaerify oil to the rockers on one bank, mark the crank with a hash mark to idenify that position and continue turning crank untill you get oil to rockers on other bank,..again mark the crank position. In the future it will be as easily done as to line up the marks and verify oil pressure to both banks rockers. Terry.