RE: Split elevator/two servos or not?
You are on the right track with your thinking on why 2 servos instead of one is better. The torque isnt as much of a factor seeing you can always get a bigger torque rated servo to handle the load. What can be a problem is the control surface deflection at the oposote end from the linkage connection. Thats where you can get your most flex and yes it can make your plane snappy on loops and other manuvers. As for running the duel servos put them in as you would to get the arms close to the elevator now you know they are equal distance apart. To run 2 separate channels for the elevator your radio has to have a reversing mode. Just asign one of the servos to reverse and bingo the're swinging the same direction. If your radio cannot then you have no choice but to get a reversing Y harness plug the 2 elev servos into that and run the harness into your elev channel on your reciever. Hope this helps.