Thank you so much. I think your right with the battery location. I had the batteries just in front of the wing tube and it flew with out a hitch, just a little tail heavy. Then I moved the batteries close to the nose and above the ignition and bam! I got hit. I was thinking of using longer standoffs to move the cg forward a so I wouldn't have to use so much lead in the nose. Thanks again, you saved my plane and my faith in this machine.