oil pressure disappeared.

How much oil pressure was it running? Any change from before changing the windage tray?
It was always at 75 psi at 2500 rpms. At idle 25-30psi at 950 rpm. It was the same after I fixed it last week. It just seems to lose prime or cannot get going. Last week when I loosened the oil filter a bit. It only took 2-3 seconds of drill rotation to get suction from the pan and pressure reading.