Flew my Phantom 4 Advanced drone last week with no problems. Wiped down the exterior, charged the batteries, put on guards and put it away as usual. Pulled it out today to fly and the gimbal does not work properly. The pitch motor makes a full range of motion during start up, but then stays pointing in a odd direction(usually downward) and makes a medium pitch squealish noise. It still streams to tablet, but does not respond to move by RC controller. Software is up to date. Calibrated IMU and compass. it said the gimbal successfully calibrated even though it never moved. Tried powering on/off about 10 times. It mostly faces down, a couple times it faced 45 degree down and 45 degrees up. One time, it was twitching about 30 degrees up and down in a more upward position. Yaw and horizontal roll seem to square up and work properly. Just the pitch is off and making the noise. Any suggestions?