If you were to go to your local gas station and pay your $40 before you start pumping and the pump shut off at $39.65, would you go back and collect your 35 cents? Or would you squeeze the trigger again in hopes of getting another 35 cents worth of fuel in your tank? I've tried squeezing the trigger again, but the pump doesn't stay on all the way to $40. It'll stop again at $39.75 and I'm left there wondering if I got my 10 cents worth of gas or if I wasted it. Keep in mind the tank is nowhere near full, so I'm there wondering why it clicked off so early in the first place. What I've been doing is going back to the cashier and getting my 35 cents back. I know it's only 35 cents, but the idea of giving the gasoline company 35 cents more than I need to bugs me.