= J - Servo trim = Tap rudder stick to select one servo after another. If necessary, tap/hold the roll/aileron stick to adjust the servo center position. All servos should form a 90 degrees angle to the linkages. The swashplate must be perfectly level. Repeat this for all servos.<br /> <br /> Note: When the Status LED is off, all servos are in their true center position (1520µs pulse width).<br /> <br />