Not sure if this is the right place to post this but here goes!

I have an Extreme Flight Yak-54 with 88" wingspan, got it all set up and noticed I couldn't get the left elevator to work, I went in my transmitter to set it up, but still nothing. I know there is someone out there that has ran into this problem before. Any help will be greatly appreciated.

My Tx is a spektrum DX7 and RX is a spektrum AR-7000, everything is plugged were it belongs. Running 6 servos and one kill that is pluged into the gear slot.

ALE=ALE+aux 1
Rudder=Rudder
Thr=Thr
Bat=Bat
Ele=Ele+aux2
Kill=Gear