Stock block. Milodon dual line swinging pickup. M63hv pump. Lifters are comp cams endure x. Oil pressure is at 45 at idle. Instantly jumps to 75 with a little throttle. I know this is still ok just not used to it being below 65 at idle. Am I just paranoid? I have run the same block for almost 20 years and this is the first time I have ever had oil pressure this low.