I normally go .003 at a time on idle air bleeds, so if you got .074's try some .077's.
Is this a 4 corner idle carb? And where are your floats set at? Floats may be a tad high.
yes it is a 4 corner idle and I put the 76 air bleeds in but now my fuel pump is taking a dump I only have a little over 3.5 psi fuel pressure so no sense in any more tuneing until I get a new pump.funny things happen with low fuel pressure.