help diagnose whining noise

Leave the spacer out, install with both gskts,, and DO NOT over tighten, as the base plates are easily broken,, smear a little heavy grease beween the 2 gskts, - and the mating surfaces to help seal,, and later sepatate them.. check surfaces for irregularity,,

Is it possible the new carb studs are too long, and not tightening enuff,,