I have an Airtronics RD8000 and a RDS8000 that I would like to use for a differential thrust project. I've tried mixing throttle as the master and rudder as the slave and visa/versa to no avail. If anyone has and ideas it would be greatly appreciated. I also have a Tactic Ttx650 I could use also. I am making a twin rotor heli., kinda like the scorpion ship in Avatar, and have the fore/aft and aileron setup Ok. I would like to have the ability to slip it side to side. It will rotate on its center and fly backwards and forward but would like it to drift sideways in a hover like a heli. Thanks!