For that radio differential thrust is not possible (I don’t think), but it is possible if you get a V-tail mixer . Plug one lead into the throttle and the other lead into the rudder, then plug one esc into one port on the mixer and the other esc into the other port. Swap leads as necessary until you get it working properly. I use one on my ft super bee as the dx-6i also does not have the correct mixing for differential thrust, works great for me .