[Bob Bidonde]

The GAV provides gasoline from the float bowl to the idle jet and the cap jet. It does not service the main jet.

Your paperclip cleaning of the GAV may have dislodged some debris that is hindering flow from the idle jet and the cap jet.

Run the engine at high speed and close the choke a few times for one second each. The high vacuum this produces may suck the debris out of the carburetor. However, this will not do any good for the idle jet because the openings in the jet well for gasoline are too small to pass debris.

Another potential problem may be the result of your float adjustment. Adjusting the float off of the engine is a ball park starting point because the angle of the engine in your car may not be 3 degrees. The ideal float height is the point where it is just short of allowing gasoline to drip. Less than this setting may starve the jets. Too low a float height will cause loss of power, and stalling while coming to a stop. Iterate the float height until it is optimum for your Model "A."

One more thing to check. Is the float bowl vented? There is a service bulletin about this.

My last point is that some carburetor gaskets do not fit correctly, and allow a leak of gasoline into the throat. This fit problem result in a vacuum leak that disturbs the flow of gasoline into the jets.