This is on an QQ 102" arf. The exit holes were pre cut. I have measured and re measured the distances from the servo arm connections and the control horn connections and they are the same.

On the cutouts, I can see where at the absolute extreme throw the wire would hit the side but I am loosing tension, only in one direction at just before half of the full throw. The other direction, the tension remains nearly the same. I can't figure out why one way would be fine and the other not.