Oil Pressure issue

Daves69 said

Pull the plugs and while running the prime, rotate the crank, see if you lose pressure that way as well.

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Great idea, I'm embarrassed I didn't think of it.........

Engine cranking, primer priming op is 75 psi.

I thought cam bearing as well but didn't think it would settle back into place when the engine was off. Cam thrust pushing it ?

What else ya got?