as i have posted in other threads i had this motor torn down and found the oil pressure relief valve stuck in its seat. I got it out and cleaned the ball, which was corroded. I tested spring and everything seemed ok to me. In the interest of not wanting to blow this engine yet again, i took oil pressure readings from the oil port shown below. I couldn’t get a socket around the pressure switch, but the fh680 manual says these ports are okay for testing. I am getting readings of 50-60 psi from a warm engine at 3000 rpm. Drops to about 35 at idle. Using 10-30 oil. Not sure if i would get a lower reading out of the switch port or not. Any thoughts on 60psi and risk to engine? Or any other ideas before i pull the cover off again would be appreciated.