Thanks for the good ideas. I'm the slap that that was hunted down by a vicious duck. I'm not an expert but wouldn't call myself a newbie. After crash landing checked the system. All seemed to be good. Tried to take off and drone flew up about 2 feet then flipped upside down. Tried researching some problems. Took drone apart. Tested motors. One slower. Switched motors. Seemed to work. Put everything back together. Tested again, same result, drone flew up then flipped upside down. I'm thinking some kind of speed control to arm? Any thoughts? I saw the advice for a new PCB. Thanks, I'll look into it