That is a very informative video. Like someone also mentioned - I also always thought the G forces would "press" the fuel to the back. Guess I was wrong lol.

Yes JetMech - I think you understand correctly. I will take the tank out tonight and see what the clunk does. I'll also see if I can't start the engine and somehow simulate the stunt while holding the plane in my hands in such a way that I can see the back of the tank and see what it does. Haven't had time yet this week to check into this matter...but tonight I'll get to it - I hope.

Thank you