I have a Tarot 680pro with SS3508-700kv, 12-3.8 CF props, HK F30a, Pixhawk controller and 4s 5000mah. Flies great. My problem is I also have a Sony NEX-6 camera and bought a DYS 3-axis gimbal. When I put the gimbal, camera and video TX on she takes about 70% to hover. I have the extra motors...