not flying

I got the Syma X5C for Christmas. A small gap has opened between between the two gears on the bottom side of the drone, underneath one of the propellers. Since the gears don't touch (or barely touch), there is not enough contact from the motor gear to turn the propeller to get it airborne. Any...

Hello All, I am newb here, bought RTF QAV 250 knock off, update firmware and settings - not flying. My quad was flying but very sloppy so decided to install open pilot and update firmware and settings. Now the Quad will run all the motors but does not take off, when I give the full throttle, it...