the problem is that i ride for about 3 hours on and off...and then all of a sudden im at WOT and the ski boggs and it seems thats its going to shut off...i pump the primer and it starts...then after no goes is being pumped throught the primer and no gas goes through to the carbs. i drop gas in the cylinder to start and it then the gas goes throught after it turn on and runs. but then againt he problem hapens again. does anyone know what is wrong?