Hi bfisk !
Nice software anyway, isn't it ?
Make sure you always use fuel in the center tank first, and then fuel from main tanks. This is simply done by selecting all 6 fuel pumps ON on ground. If you have less than 1000 lbs in the center tank upon starting your flight, don't care about it, use main tanks fuel and you will care about center tank fuel later on, during the flight.So that means center pumps OFF for the time. Once you level off in cruise and you have that small amount of fuel in the center tank, you can turn the center tank fuel pumps on and let the center tank get empty. It will not take too long
