How often should the fuel filter be changed on this beast? I had it changed back in Feb at around 80hrs, I am right at 150hrs now. Should I go ahead and change it again, or wait til it is on for a year? I figure I am using mine quite a bit more than the average person per year and wondering if I should change it more frequently? Oh, and we are not running E10 fuel down here yet...Still good ol fashioned 87 octane gasoline....![]()