I got my Phantom a few days ago. After seeing a number of YouTube videos and gone through numerous forums before flying the bird I decided to mod it with a gimbal/camera protector which I've made out of a broken plastic tennis racquet. I also want to add a small GPS tracker I have just in case of a flyaway and a loss of power. These will be fastened to the Phantom with cable ties. What are your opinions on these ? The grid weighs 28g and the GPS tracker 57g totalling 85g ? Should I recalibrate anything or will the Phantom compensate for this slight weight increase ? Your comments are appreciated.