I'm trying to use my RD6000 Airtronics transmitter to setup two elevator servos without using a reversing y harness. So far I haven't been able to figure out how to do it. Is the RD6000 capable of mixing the two and if so does anybody know how? I read the manual but couldn't see anything for what I'm trying to do.

With the elevator servos on each side at the rear of the fuselage, you'll need a reversing harness, or internally reverse one of the servos.
With the servos mounted forward inside, they can be set next to each other with no reversing.

The dual elevator was not a feature on the RD6000, it is on the RD8000 though.

Doh! and I loved my radio too. Oh well I guess I will just have to get a reversing harness. I cant place the servos inside the fuselage now because of the holes cut out for them in the sides of the fuselage.