There has to be something in the instructions about Dual elevator servo installations. Usually there is a spacific channel that is intended to be used as the slave channel. Once the proper RX port is being used and the mix function turned on in the TX menues you will then have to match the servos travel with end point, throw percentages, sub-trims and mix rates. If you can't find anything in the manual then I would suggest a phone call to Hitec.


Shawn