Chris,
Do not fully tighten the two manifolds to the head - just light-snug tighten them with no gaskets between the manifolds and the head. Then, fully tighten the intake to exhaust manifold with one gasket between them. Then, put the manifold-to-head gaskets in place and tighten the manifolds to the head.
Last edited by tclederman; 06/09/2011 12:06 PM. Reason: made it clear to put manifold to head gaskets in place