RE: Mixing Problems
That radio will do CCPM.
If you have the manual then first step is to make sure all servos are plugged in the correct receiver outputs.
Aileron -1
Elevator-2
Pitch-6
Set the correct swash type.
Set the servo reverse switches so that with positive pitch you get all three servos moving up.
Now the trick! There should be a swash mix reverse in the swashplate menu. This should correct your problem.
(I was going to give you a step by step but my pc won't dispaly the Futaba download properly)