Did you ever get this figured out.
I had a similar problem no oil pressure at idle and hard to start turned out to be some o-ring coming apart on the HPOP and clogging the return screen
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04 F250 PSD 6.0
ARP head studs/Black onyx head gaskets
180cc injectors/stage 1 fuel and cross over lines
58v FICM from Swamps diesel/SCT X3 innovative diesel
MBRP turbo back duals/ATS intercooler
Amsoil bypass/coolant filter/Fluidamper
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