I have a 2000 210 Searay with 5.0 engine. After running awhile (30 minutes) and slow to wake speed for 5 or 10 minutes it will die and I have to remove the fuel filter and fill it with fuel to start again. The gas will be down 1 0r 2 inches. Does anyone have any thoughts on where this air is coming from. Everything looks good as far as the fuel lines.