I wouldn't think that this would cause any sort of differential, based only on this vertical position. I guess it goes into the collumn that would prompt you to examine the components before assembling that part of the wing, although I would also assume that these parts should be identical but opposite without the difference in the angle like that.

I had one that was supposed to be center servo (single servo) for the ailerons. I converted it over to dual serovs by building a little box that was supported by reinforced ribs at the center of the wing/aileron point. I ground out the torque arms using a Dremmel Tool (spelling..). It worked out very well. I think it was the Four Star 40, but I can't be sure. That was several years ago.

So, if you are having problems with that, just cut them out (the torque arms), and put in two servos.

CGr.