2011 GT, 95000 miles, 99% track car. I will take the car to the gas station before a track weekend to fill the tank so it is ready to go for the first session outside of checking tire pressures, etc. I am having an issue with the pump clicking off after a gallon or two and repeatedly doing so until I manage to get the tank full. Filling it from the fuel jug(s) does not seem to be a problem. Any ideas what might be triggering the fuel shut off?