"Wicking" action of modern fuel.

A few years ago, I left the top off of a Carter AFB, sat it on "legs" on my work bench, and added fuel to the bowls to the normal fuel level.

Watched as the fuel slowly climbed the sides of the bowls and over the top.

Remember that a single drop of spilled gasoline will cover the entire garage floor wink

Jon

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop