No, I've got rudder to aileron and rudder to elevator mixes set up. When I move the rudder a given amount, the ailerons move 3% as much and the rudder moves 2% as much. But the exact terminology of the mix might depend on the radio brand.

I'm not positive on the directions of the mix. I pretty sure that the rudder to aileron mix is left rudder to left aileron to correct a slight roll towards inverted. I'm not certain but I think the elevator mix is up elevator to correct a very slight push to the belly.

Both of the mixes are very minimal, I flew the plane for better than 6 months before bothering to set up any mixing. Flying knife edge without the mixes was not a problem. But it sure is sweet to have rudder only knife edge now!

Dave