Are you sure? That doesn't seem to be the case on my CX.

I've noticed the same thing that dankirk is talking about. When I push forward on the cyclic, the swash plate moves forward and to the left, having been actuated only by a single servo. The helicopter, on the other hand, moves straight forward. There seems to be no mixing going on of any kind. The only way I can get both servos to move at the same time is with diagonal cyclic inputs.

I've never been able to figure out exactly why, except that it has something to do with the fact that it's a coaxial setup.