if your flaps go up, they push the plane down, if your elevator goes up it pitches the plane upwards, so they are somewhat acting against each other cancelling out, i dont think this is what you want, if you are trying to make the plane loop tighter or turn upwards faster, i think you should have the elevators go up, and the flaps go down at the same time, im not sure about the percentage, but i ran 30% and my plane did noticeably tighter loops than before