I have an Alpha 40 RTF trainer, which was shipped with the servos installed, and the wing in two pieces. Obviously, they couldn't center the servo in the wing, so they installed it in the first bay of one side. The two pushrods are not perfectly symmetrical, but it does not seem to affect anything.

On the other hand, you can center your servo, and then reinforce the cutout box with some lite ply. It shouldn't weaken your wing. I did this on my Four Star 40.

Good luck.