HELP!! need experts advice on 440 trouble.

Here is a question:

When you set your intake on the heads, how much space should there be? It seems as though there is a lot of side to side play, is it ok to double gaskets or what could be used to take up some space before tightening it down? These are RPM heads and RPM intake, the deck was cut to zero so like Fishbreath said the intake mating surfaces should actually be closer but not the case, I wonder now if the heads have been milled on the intake sides.
Anyway: it was #4 that was causing the noise, pull the plug wire and the misfire/exhaust leak noise stops...when I pulled the intake I can see the bolt right next to the #4intake runner is stripped and there was oil around the port? I can only figure that oil was being sucked up the stripped hole and into #4 runner, an oily air leak? I will replace the gaskets and see what happens.
In the meantime I looked into a few other ports and see what looks like a collection of gas/oil laying on the backsides of some of the valves? I dipped into it and it feels a little slippery but smells like gas, I cant believe that anything could be puddled in there...gas or oil. So even if fixing the stripped intake bolt and replacing the gaskets takes care of the noise/miss I fear I will be pulling the heads