If you had your heads milled down, you should either have the intake surface of the head cut to match (so you can use any intake) or have the intake milled to match...either way, check fitment before gluing it down...my 0.02 dollars on the matter.
That's not his problem...he used these shim gaskets with an aluminum intake against the advice of several people here. These are to be used with cast iron intakes only. Use composite (FelPro,etc.) ones with aluminum intakes.
