RE: How can I hook two elevator servos together
A few years ago, when the servos were made withe wires between the pot and the circuit and the motor, it was possible to reverse the rotation of a servo but now you have to buy a servo reverser to change the rotation of a servo.
If you want to connect two servos on elevator, you need a servo that rotates on the wrong direction. (Some are available but not all)
You could use the servos that you have but connecting the two push rods to the same side of the servo arm.