Strange oil pressure after I frame

[Nater1977]

Ok I will check and see if the bearings are the same
I did find today my Jake brake won’t hold in the detents going to order some shafts and springs ect. They are not OEM they are Mahle which I have had excellent experience with them in automotive. BUT here we go. It does run at 40 around 1400 and it is like 28 T idle but this is with the dash gauge I really need to use a mechanical gauge.