Let me try to go through it briefly. If it's not clear be sure to ask back.

To start the flapperon mix must be active on the main menu. You will have one servo in CH 1 and the other in CH 6.Then go to program mix one. Set ELEV as the master and flap as the slave. Then chose what switch you want to use to activate the mix. I recommend the trainer switch. Then set your %'s. You will have to set + or - depending on how your servos are set up. Be sure to set the % for up and down ELEV. That takes care of one side. For the other side use program mix 2. Use ELEV as the master and AILE as the slave. Do everything else the same as program mix 1.

That should have it. Let me know if something is wrong.

David