Has anyone noticed that when you fill your car, the pump wants to shut off a gallon or so early? Theres only a few stations I go to where it actually fills the tank before the nozzle shuts off automatically. All the other ones I have to manually top it off if I want to get a true full tank. I'm not talking full as in up to the top of the filler neck, I'm talking about FULL on gas gauge. I'm guessing maybe the filler neck design is causing the fuel to gurlge up and make the pump think its full???