This. Either get some .030 gaskets if they still make them (they used to but who knows any more) or take another .030-.040 off each side. You'll also have to take some off the end rails of the intake. The closer to the China wall the end rails are the better, as long as they ain't holding the intake up.
BTW, make sure that is not happening right now. I've seen the end rails holding the intake up.
I don't know where these guys get that you don't have to test fit the intake. It has little to do with what's need decked off the block or heads. Who says your intake manifold isn't on the wide side of the tolerance?
You have to test fit everything and assume nothing. I've had to machine intakes on engines I know had never been apart.