Aircraft Type: Octocopter Gimbal Type: 3 axis with damped mounting plate Radian Type ( 1, 2 , 3 axis) 3 axis Gimbal Power source: 11.1 V 1300 mAh Gimbal Radio Type: Futaba Radian Communication Protocol (S.Bus, PPM, PWM, Spektrum) S-bus Connections: Change these to match your setup Roll Sensor: Port 1. Sbus in 2. 3. Sbus out to tilt 4. Servo Tilt Sensor: Port 1. Sbus in 2. 3. 4. Servo Pan Sensor: Port 1. Sbus in from receiver 2. Power in 3. Sbus out to roll 4. Servo Symptoms: Constant buzzing sound from roll servo. Pan is oscillating, sometimes when switching to stabilised slew mode; sometimes after panning slowly. Seems to set itself into a feedback loop and keep going forever. Even at fast speed gimbal seems to move and "stick" then carry on, but when checking by hand there is nothing physically making it stick Steps taken to resolve: Checked all connections. Drive belts look taught. Tried another battery. Tried reducing pan gain to 40% (from 85%) and slew rate to 30 (from 60).