Per suggestion by Kloner, I recent bought some Suppo 2810 motors for my TBS Discovery, to replace motors swiped from my DJI F450. Let me tell you, those Suppos are the bomb. Where before my Disco would putter along, it now books feet and hustles. Sweet! Plus, it just seems to fly so much more smoothly. I dunno but that those motors have made me a far better pilot and they did so overnight. All I can say now is, Thanks, Kloner, for telling me to get em!