Did you ever measure the clearance between the pump cover and the rotors ?
Back on 3/15/2020 you said this all started after installing a Moroso filter.
Did you go back to a filter that never gave you problems?
This problem Started after new Milodon oiling system and Moroso oil filter. Moroso was a breaking fine micron filter but changed it out to a regular Wix racing oil filter and pressure did go up to 82psi from 68psi cold..
Priming issue still the same enough. So it's not the oil filter.
