Dave actually what I said was that with the large cam overlap, the single throat suffers badly from reversion of the inlet gas flow.

Multiple throat carbs share the back flow volume and do not suffer as badly from this problem

Maybe when you do the timing chain you could go back to a milder cam if you want to use the 32/36 for better economy.

Is there anyone on site that has upgraded a mild cam with around 270 - 280 degrees advertised duration or 220 degrees at 0.050" lift that could sell it to Dave?

I am sure this would solve a lot of his problems.