RTK - your comment caused me to consider something I've asked on this forum before, and never received a reply to. Perhaps you'll take a shot, and I'd appreciate it!

WHY do we "believe" that a klunk at the back of the tank will "suck air", believing the theoretical (and physically-impossible) statement that "fuel will slosh to the front of the tank, and the klunk will be exposed" ??

Can someone explain how the fuel mass in a tank forward of the CG will move for a long enough period of time to cause the klunk line (and hence fuel line to the carb) to use up all the fuel in the line?

I would like to understand the physics behind this lore of the hobby....