One precaution- - - -lowering the float will also create a lean condition over pretty much the entire mixture range, and will most likely cause a flat spot in the transition from idle to midrange RPM. Ideally, the float level needs to be just barely below the level of the venturi so it only needs a little extra airflow above idle to start the fuel flow in the main metering circuit.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!