Good morning Bolters. The Old Dominion guys helped me get my 216 running a few months back. I am now looking it over to get ready for a paint job. I noticed when it ran on the test stand there was a "holiday" between several of the exhaust ports and the head. A friend of mine told me I need to break apart the exhaust from the intake, and reinstall the rectangular gasket between them. When I go to final mount against the head he said to keep the two manifolds through bolted but loose. Make the connection at the head per spec and then go back and snug up the 4 bolts between the manifolds at the lower end. This sounds reasonable. Any thoughts ? I'm not too well versed in the engine department. - Thanks Joe