350qx3

I have a 350qx3 with a gopro gimbal hooked up to control from my dx8. The quad has two servo connectors in it and one is occupied with the gimbal. So my question is could I control another device like a servo along with the gimbal at the same time? Thx.

Will a 600MW VTX interfere with the 350qx GPS, Compass, ect Can someone link me to a cable for gopro hero3 to immersionrc vtx that can work with a gimbal? thx http://www.amazon.com/600mW-5-8GHz-A-V-Transmitter/dp/B00OCNWWTS/ref=sr_1_2?ie=UTF8&qid=1440965969&sr=8-2&keywords=600mw+immersionrc