oil pressure disappeared.

I had a pickup break at the threads and the oil pressure was lower at first then bounced around. I shut it off, I was at the track. It wasn’t broken completely off, but broke completely when I moved it around removing the pan. The oil pickup tube was from 440 source, 440 source sells some really good products and I am grateful that they exist, but their oil pickup are not as good as the Milodon pickups. Another thing…. Did you leave anything in the pan like a rag that would get sucked into the pickup? Stewart Warner makes a warning light/buzzer for low oil pressure and high temp, I put one on the car after that.