I just finished balancing my aw ultimate. Took out two servos from the tail, leaving one on each elevator, all the batteries as far forward as possible, 4, in all. 2 2700 mah nimh, 2 1300 nicads, and I still needed 8lbs of lead in the nose. That's unbelievable. I've got a DA150. Rudder servos are pull-pull slightly behind the cg. I can't imagine flying it with that much added weight. Anyone out there with similar set up?