RE: Sideways mounted srevos
Aileron belcranks came from the days when radio control, and servos were expensive.. I use two aileron servos and mount them to openings I cut int he ribs, then double with 1/8" lite ply. I put holes in adjacent ribs that line up with the mounting screws that I can insert a jewelers screwdriver into. The down side is that you need to cut the covering away to insert the screwdriver if you need to replace a servo, but not that big a deal.