69 396/325 Qjet to Manifold Gasket Question

[Bill Pritchard]

Looked thru my service manual, overhaul manual, AIM, and Rochester Carburetor books and still can't find anything that delineates what type and how many gaskets are used between the carb and intake manifold. I have a thinner gasket that has the long elongated slot from side to side just forward of the primary throttle bores, a thicker gasket with the same slot that looks like it may have metal or asbestos or something impregnated in it, and a thin metal (stainless steel?) shim shaped like the gaskets but minus the elongated slot. Trying to replicate factory configuration. Any help appreciated.