I am just about finished setting up my Multiplex Fun Cub mated to a Spektrum DX61 TX and a Spektrum AR6210 receiver. My problem is the travel on the elevator and rudder is out of whack. The elevator has twice as much down movement as up movement and the rudder has twice as much left as it does right. I can't do anymore with the servos, horns etc. Can I get the two control surfaces equalized by programming the transmitter. If the answer is yes how fo I do it? Thanks for your help.