Need some help. After winter storage of my 2002 247 GradyWhite with twin 150 HPDIs I am having a fuel level indicator issue. Even though I filled up with fuel before storage my indicator is flashing like I am running on reserve. I have the Yamaha fuel management system digital gauges with the new type of fuel sensor in the tank. How does one reset this thing. Been out in 4 to 5 foot seas hoping to "break it loose" but no luck. HELP !!