I use gaskasinch on my intake manifolds.. after cleaning test fitting everything involved I put it on the faces of the heads and on both sides of the gasket and the faces of the manifold. Not the China wall and I throw the China wall gaskets away.. I put the very thinnest smear of the right stuff on all four water porch on the manifold and the head side. I put a double stacked bead of the right stuff on the China wall and a good little extra in all four corners and then with the intake manifold upside down and waiting I put one bead on its China wall with a little extra in the corners..
