Was machining of the manifold required or did you just reseal it successfully?
I bought a brand new Edelbrock Victor 440 intake. When I mocked it up using grease on the heads and Permatex on the manifold. I found the manifold is too wide resulting in the bottom of the ports sitting up over a 1/4" above the floor of my Indy EZ intake ports. I had a local shop cut the manifold mating faces down to make the manifold narrower and bring the port alignment into closer proximity to each other.
Prior to having it cut, I used the Hughes Intake Sealing Tech Tip to verify the angle was correct.
http://www.hughesengines.com/TechArticles/intake_manifolds_articles.php