Hi all, I have some problem with a phantom 1. The unit was flying really then it would just drop out the sky .. I did notice that the leds under the motor was flickering.. The motor now feels very lumpy and not smooth to twist .. I changed the motor. Started the motors and the new motor was instantly lumpy and now the led's under the motors was not on ? I have more motors but don't wanna try it just get blown again . Hope someone understand what I'm going on about..