I've had my p3p for a couple of days now. Before 1st flight did a cold imu calibration and gimbal calibration. 3 flights and everything is just perfect. After 3rd flight, upon startup, the gimbal yaws about 2 inches to the left and then slowly moves back to center in about 10 seconds. Afterwards works perfectly. Redid imu calibration and that resolved the initial gimbal movement. Weird. Anyone experienced that before? Note - no crashes or anything close to that.