Id have to plead ignorant on the reverse y.... You could probably make you own reverse y by just soldering the red and white on the pigtail to the opposite colored wire on a servo extension...


You can probably achieve the same thing pretty much by just putting the servo arms 180degrees opposite of each other as long as the servos are centered.

I know you said you dont want to use mix but if you have a computer radio it would be so much easier to just activate the mix though. What kind of transmitter are you using?