Played with bleeds a fair amount.
When you say you have a "23 main air bleed" do you mean that your high speed bleed is .023" diameter? If so that small of a bleed should cause the opposite of what you are seeing — the smaller the high speed bleed the richer the carb should go with RPM.
They used to call the main air bleed an "air corrector" because its function is to correct for RPM dependent AF ratios. There is a window of HS bleed sizes that will work with a particular combo that will allow a fairly flat AF curve — out side that window the fuel curve will tend to go richer or leaner with increasing RPM. In your case it sounds like the main air bleed is too big.
The other aspect of emulsion is the actual emulsion hole configuration. Emulsion holes effect the lower end of the RPM band and have the most influence over your air mixture just as the main circuit kicks in. Higher in the RPM band the high speed bleed has much more influence. The stock Holley two-hole setup has proven to work very well over the years and after a bunch of experimenting with my four-hole blocks I wound up at the stock Holley configuration.
If you talk with Tuner on the Innovate site, he'll tell you about how so many "new and improved" billet carbs suffer from too much emulsion air. That is to say, high speed bleeds that are too big and emulsion holes that are too many. I happen to agree with him, and based on the limited info you provided I would hazard to say that that your carb suffers from a classic case of this "too much and too many" syndrome.
For your setup I would suggest that you go back to a two hole emulsion setup with the top, middle and lowest holes plugged; the second from top and second from bottom holes should be .028". For a high speed bleed you may want to be smaller than you currently are to flatten out the top of your fuel curve but cannot recommend a size not knowing where you are at now.
Hope that helps