walll, I'll be damned.
A friend of mine once was ferrying a G2 along at 5,000', with heaps of fuel in jerries on the litters. Silly bugger miscalculated the actual in tank fuel, all the way to the ground it was running through his brain, how will I explain this if I stuff up the auto, he didn't.
Something as stupidly unnecessary as those blessed fuel mats should be thrown in the trash can, so's the idiot factor is limited.