1979 B200 5.2 with its matching original carter BBD. This has been a problem for awhile now and I am almost out of ideas. At idle the venturi's are discharging fuel like nothing else, its dribbling out and flooding the throttle plate enough that the engine runs rough and fuel economy has been reduced by a noticeable amount. The carburetor has been gone through multiple times and everything is adjusted to spec. The vacuum step up piston/metering rods are working as best they can. The assembly draws down when the engine runs and if you lift it up manually it starts to go richer like it should. The two main jets have been replaced with new ones of the same stock size (.086") and as of right now the float is actually set lower than the stock setting because the fuel bowl was overfilling and soaking out through the gasket. It still exhibits the same problem but nowhere nearly as bad. The only thing left to replace would be the float as it does have the original float which externally appears to be in good functional condition. The next step for this thing is the trash can.