Oil pressure getting past the long head bolt on drivers side oil galley

I'll report back either tomorrow or Tuesday. Going to pull the bolt out,check the bolt hole seating surface,check the hole with a screwdriver for crud, measure the hole depth and bolt length.
I'll let everyone know what the plan is.
Thanks for your input.
HR20
When we rebuilt my 340 I cleaned all the holes with a bottom tap blew them out with brake cleaner and air, cover your eyes, and wire brushed all the bolt threads. Prior to torqueing the bolts I applied a thin film of ARP thread lube and a Mr Gasket hardend head bolt washer under all of the factory bolts.
You would not believe all the crap that came out of the bolt holes.