Thanks for the post Ron
Right on the mixture.. well, please do get a 02 sensor or EGT exhaust gas temp sensor and adjust for best mixture maybe a bit rich on your engine.
This is the drag about carbs and tuning for races and best performance there is no manual mixture adjustment it is fixed for the automotive stuff.
heck get Stan to place a main mixture control on the carb that can be adjusted from the drivers seat, you sell a few of these without doubt.
The chemically optimal point at which this happens is the stoichiometric ratio (sometimes referred to as stoich), where all the fuel and all the oxygen content in the air of the combustion chamber will perfectly balance each other out during combustion.
This is what is good about EFI and digital controls you can tweak the mixture if you have the controls
On my aircraft I adjust lean to get max exhaust temp then go a bit rich on the stoich side. Best power and runs cooler then lean. This is at cruise.
Flow vs Delta Pressure across the throttle plate at % throttle open, say 10, 25, 50, 75, 100 % would be good for a chart. If you could get 02 or exhaust temp this would tell us how linear the mixture is or what the curve is on a dyno so we could add engine load.
best
here is a link that maybe useful
http://en.wikipedia.org/wiki/Air-fuel_ratio