Oil pressure concern

Are you running the 90 degree adapter? I've ran my 360 with and without the adapter and noticed my oil pressure drops 5-8 psi without the adapter. Probably due to less restriction. I think when my engine is nice and warm it runs right around 15 psi. Have about 5k on the motor with no issues except I can't keep my head out of the hood area for too long. Every time I stick my head in there it adds up to $$$.