My Mavic is three months old and relatively trouble free until now. Getting an intermittent SD card not present (though it is in there) and no gimbal control on the remote. When it does work, the SD card will format and the gimbal will calibrate. Had it out this morning and on power up said SD card not present and gimbal would not look up or down but flew anyway. Upon return, the card was now recognized and I could move the gimbal up and down with the remote. Could this be a symptom of a bad ribbon cable?