@anathkamath - I am a little confused here.. Supposing i was at full throttle at low rpms, airflow through the venturi would be low as well, that means a lower vacuum, hence a lower amount if fuel is sucked out of the main jets, at higher rpms, airflow will be high contributing to higher vacuum at venturi sucking out more fuel from the main jets.. This is the way i guess it retains the required approx afr throughout the operating range....
When you say the main jets flowed at max all the time, i guess you mean max flow with respect to pressure diff in atmosphereic to venturi, which is logical as thats the only way it can hold the approx afrs.. Pls correct me if i am wrong here... This also means by increasing airflow you effecitively increase fuel flow as well, limited to the max flowing capability of the jet ( self correcting to increased airflow to an extent ) .. But if you meant fuel flow from main jets is max ALL the time, it is just not possible to retain operating afrs through the rev range.......
This may help, its off the edelbrock carb manual -
"The fuel flow rate in the Main System is proportional to the air flow rate; as air flow increases - from either an increase in throttle opening or an increase in engine speed at the same throttle opening - the fuel flow also increases by nearly the same degree. "
EPS Carb Manual: Section 1 Theory of Operation
btw my 100th post
