ORIGINAL: speedracerntrixie
If you do not have a TX that supports dual elevators, the best way I have found to do this is with a Smarf Fly Equalizer. It will hook up the same as a Y connector but allows you to reverse a servo and has adjustments for center and end points.
http://www.smart-fly.com/products/Eq.../equalizer.htm
It's been pretty well covered that he DOES have a transmitter that will do exactly what he wants