We're set up with "negative" bouyancy in that that blimp will sink slowly with no power. We did that for safety as much as anything so that in case of a battery failure it would come down instead of winding up in the rafters. Tonight when we flew we changed the thrusters so that neutral elevator gave us full forward thrust. That worked a lot better than the way we were flying originally. In fact the entire evening was a success until one of the bouy lines got caught on the backboard during the final media break. Oh well, we got the sponsors a little extra "air" time.