How do you program dual elevators on the the dx7? I cant get it to work. Any help would be great.

Use a mix. Elevator is the main channel and gear is the slave. Connect the right elevator to elevator on the receiver and the left elevator to gear on the reciver. Once you have them working together you will have to check for reversed channels and see if the trim is working for both of them (It should be). As usual first try to align them mechanically and then use fine tunning with subtrim.

what the gears and the slave?

I put all the wires in the right spot and still only have the elevator servo working.

G'day Mate.
Set it up this way, use elevator & Aux2, in your RX.
Go to Input select,
AUX2 : INH
AUX2 : Trim : INH
Use this setting if you need flaperon.
Flap : INH
Flap Trim : INH
Then to mix elevators,
Go to mix #5, you MUST use mix 5 or 6 so the elevator trim will work for both elevator halves. ELEV-to-AUX2- ON, don't use gear channel, you can't inhibit the gear channel.
Rate +100%
+100%
SW : ON
OFFSET : 0
You may need to reverse a channel, just make a note of which side is your elevator channel & which side is your Aux 2 channel.

Alan0899 is completely right, please disregard my anterior post.

I got it. Thanks