Compression Issue (thin head gaskets??)

Mill the heads, i would.

mill .053 off of them, then mill .030 off the intake face of the heads, test fit intake and more them likely ...mill another .020 off the intake itself.

Ive milled all kinds of heads to get where i need to be, milled my j's down to 60cc...no issues doing that. some people dont see it from any view but theyre own, no sweat bro.