There are allot of causes of servo related glitches. First off I would test all the obvious, mechanical condition of the servo no striped gears, chaffed or pulled wires, properly charged and load tested lopo battery. Then I would isolate the bec , remove it from the RX, use a 4.8 volt RX pack plugged into the receiver and see if the problem goes away, if it does you can install a shunt around the bec leads "the SC wire" to help remove the noise. If it does not correct the problem, start testing the RX with the SC unhooked and using the separate RX 4.8 battery plug the steering servo into the throttle channel and test the servo movement using the throttle channel on the RX and see if it still glitches< assuming you do not have a servo tester. If the troubles go away you have a bad RX channel. If the problems are still there, you could have a bad RX/TX or Servo. This is where a good tester helps in testing. You will need to start swapping out known good parts until you have located the problem
Top Gun 2011, "current problem" 88MPH. Top Gun 2014 "Marine One" 99 MPH. bet speed to date 125 MPH
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