After some careful measuring I have determined that the control surfaces do move equally in both directions when disconnected from the pushrods. The rudder feels like it moves further one way probably because of the way it is hinged. I even bought another rudder and it moves identical to the one that came with the kit. The buzzing and binding still persists even after cutting away some of the guide tubes. Here is a video showing the servo/pushrod movement. I left the elevator servo unsecured to show how much it wants to move up and out of the servo trey.

https://www.youtube.com/watch?v=r38ObOWeLc8