2007 EL. Put the nozzle in and let it go, shuts off with the gauge at 3/4. I can squeeze more in until it's clear up to the top, but the gauge won't go higher - except some of the time it will go up to the bottom side of the Full mark. Gauge going bad? Level sensor going bad? Something causing the tank to be a PITA to get over 3/4 full?