I have a syma x8, i was going to use the syma x5 5.8ghz fpv kit with it. I put the camera onto the drone,, but suddenly the drone wouldnt fly right. It would gradually lean back,, wouldnt tilt as much as normal, and if I recalibrated the gyro it would choose some random up,, further from true up than when it was problematic. Turning it off and back on would enable a takeoff, but immediately it would start to lame. The next day,, no camera kit,, it steadily fixed itself,, starting a little lame, but as the flight went on it became more familiar.