I'm flying my new Ultra Stick (32cc Turnigy) with old standard 6v NiMh on receiver and 4.8v NiMh for ignition. After $19K damage to garage I'm still not comfortable allowing LiPo's back on site, but that's another story. Suggest that you locate the two elevator servos in the forward cut-outs (under the trailing edge of the wing) rather than the aft ones where I did. I ended up adding 1/2 lb of lead on firewall as well as locating both batteries just behind the firewall to get it to balance. Balanced at 4-1/2" (115mm) behind leading edge made for a smooth flyer and a real dream to land. Couldn't be happier with this plane which by the way, generated a lot of positive attention at the field.