One quirky thing with this setup that I noticed is that there is a setting for FLAP deflection within the BUTTERFLY setup.
So, unless I'm looking at this the wrong way, you can actually reverse
BUTTERFLY the more into the BUTTERFLY deflection you go if you have the FLAP BUTTERFLY setting too low. Kind of funny. You'll have to play around with it a little to get it dialed in because of that, I think.
It might be better to just do an offset flap to aileron mix.