Well, I built the truss build fuse, so all mine are hidden "within". If you have the glass/plank "sandwitch." I'd cut two holes (one for each servo) to avoid one huge gaping hole. Then put the hardwood for rails only. I did it that way on my fazer.... I'd also mount the "business side" of the servos on opposing sides of the fuse to avoid binding and whatnot.

Also, try a different prop on that 32!! 11 x 4??? thats an awful lot. I'd cut it down to a 10 or even a 9 x 4.