help diagnose whining noise

There's a recent thread with an Eddy tech suggested dual 4's on a small block to cure an overheating (?) I believe..

Did you ever take the spacer off??

Before you go pulling the manifold,, I'd be scrutinizing the base/adaptor gaskets REALLY closely..

I can't re-enforce how strongly I recommend that $15 stethescope to pinpoint the noise to ground zero.. (THE noise)

Does the spacer and gskts match both the carb base and manifold, ie.. If you have an open plenum manifold ,, and a four hole spacer does the gskt overlap the edges enuff,, or are they loose to "flutter" under the spacer,.. ?? hope that makes sense...