<span style="font-family: Arial"><span style="font-size: medium">I have a Walkera 22e with Walkera brushless ESC and brushless motor. It used to work well. Now, at any throttle setting, the tail motor speed pulses and the heli is so eratic I cannot fly it. If I disconnect the brushless motor but leave both the RX and ESC powered up, the pulsing stops. I can't figure outwhether the problem is in the RX, in the ESC, or in thebrushless motor. Help!</span></span>