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I replaced the pump since the problem showed up. Pressure was checked with a mechanical pump. Checked the relief spring and valve and reassembled this afternoon. Problem is gone. Idle pressure is around 20 and goes up from there when running. Thank you everyone for the help!
I've had 10-30 in it and pressures were lower by around 5lbs all the way around so I changed to the heavier oil. Also over 90 degrees almost everyday in the summer so another reason I changed