I hope someone here can tell me what the hell is going on. About maybe twice a tank of gas I get a beeping that sounds like the "low fuel" beeping noise but nothing shows up on the display and it doesn't matter how much gas is in the tank. I've had it to O.C. Welch twice now and they can't find anything wrong with it. They say it has to be happening at the time they scan it for it to show up. Any ideas what it could be and how to fix it? I want to get it fixed before my warranty is up.