Hi,

You need to go to the Elevator AFR menu (In the 14MZ the elevator is set to VC1) and increase the values to 200%!! or as high as you need them to get the right travel. If you still need more travel then go to ATV and increase the ATV for Aileron 1 and 2. This is what worked for me. It seems weird that on a delta that the default is high aileron and low elevator, because whats really needed is the reverse.

Still all that money spent and the damn thing doesnt do Elevon mix at all well. This sucks big time and I hope Futaba plan on doing a firmware update VERY VERY VERY soon to correct this silly bug.