318 - intake vacuum leaking

Uh he either milled 18+ cc out of them to 50cc, or he milled 8cc out. Sounds like 8cc.
About .005 per cc for small 318 head, hair more for closed small chamber 273/318
Felpro "blue" ? Assuming a PT8553, measured crush is about .046.
He milled .100, or .040...
The stock shim was about .019-021

He's either .074 lower or .020 lower... the later points to just nothing but a bad gasket seal sucking oil. He may need nothing but the right gasket.

Gotta have the correct info.