I purchased a 6EXA last year... upgrade from the skysport 4. I recenlty acquired a 120 sized plane that is designed for using 2 servos for the elevator, one for each half.

At the time I assumed that I could program the 6EXA to handle the setup... it seems innocuous enough. After a few days of strugglung though, I am appealing for help and suggestions!

Initially I had hoped to use flapperon mixing as well, but that is secondary to getting the elevators set up right. Currently I have both servos mounted, and mechanically they are as geometrically identical as I can manage (I can't see a visual difference in the servo/linkage geometry). Now all I need is to get both servos operating in tandem (with one servo reversed). The closest I have managed so far is to P-mix channel 2 (elevator) with channel 6 (flaps), and have 6 at -100% mix. The problem with this is twofold... firstly, the Flap knob is easy to bump, and will move one half of the elevator. The other problem is that the elevator digital trim adjusts only the other half of the elevator.

In my initial attempts I tried mixing chan 2 with chan 5 (freeing up channel 6 for the aileron/flapperon mix). Unfortunately, you only get half travel of the one elevator half, and it depends on the setting of the "gear" switch. Again, trim affects only one of the elevator halves.

Either I am missing something in the radio, or the functionality is not available through mixing.

Does Futaba have a recommended solution to my problem (It is not a unique issue, is it?)
So far I am aware of the following alternate solutions:
get a servo reversing circuit for one servo, and put both servos on channel 2 with a "Y" harness.
get a reversing "Y" harness.
get a "matchbox"
get a different radio.

I have read varying reports on the success of using servo reversers/reversing "Y" harnesses because they are not necessarily going to produce equal travel on the elevator halves. I am reluctant to go that route on this plane (which is my first attempt at IMAC....)
The matchbox is expensive.
A new radio is very expensive.

Is there something I am missing?

gus