Well great answer! If you don't know then you don't have that problem. And I don't have to spend money to find out what all the hullabaloo is about, with all-aluminum AFB-type carbs.
It seems there are several members on FABO who are having troubles with what they believe is the gas boiling away during 30 minute shut-downs. Generally that is referred to as the fuel percolating away.
I tend to disagree with that diagnoses. But until more guys like yourself, report in with no troubles,I guess the jury is still out.
What fuel are you running? and is that RPM an RPM-AirGap? Got headers? What engine temp are you running? Cold air intake? A ventilated hood?