Profile: Jim Norman

My fuel tanks hold 100 gallons. I set the tank size to 100 gallons. The most the the gauge shows is 98 gallons. If I stoop the fill at the point where it says I've reached 98 gallons, I am 10-15 gallons short of full. Interestingly, the full used seems pretty accurate. If it says I used 50 gallons, then that is about all I can put in. The usage seems near 100% correct, but the level is off. Is there a way to address this?