I have the propel quadrocopter and I've had this for 2 days. Ran great out of the box no problems. I've probably flown it 25 times so far. Then I took it for a flight ran fine and I landed it with no problems.. 10 mins later I started it and it took off straight up in the air full throttle and there was nothing I could do. Once it was out of range it fell back to the ground.. so I changed batteries in both the drone and the controller and same thing. I can steer it and turn it but nothing else. Any ideas to what happened, how I can fix it or should I just send it back??