I have a Phantom 3 pro that came with the GL 300 C controller. My max range is about 400-600 yards way shy of what DJI advertises. If I switch to a GL A or GL B controller will I increase the Phantom 3 range? ( I have been flying mostly around a small town and not around big buildings or power lines. ) Should I be getting more distance before loosing video signal and the RTH activating?