Raf,

There is another possibility. You can use two single axis gyros (oriented for pitch and roll) and rather than mixing elevons at the transmitter, use an external mixer (downstream of the gyros) to mix the elevons. Electrodynamics sells a mixer for $16.95 [link=http://www.electrodynam.com/rc/EDR-116/index.shtml]http://www.electrodynam.com/rc/EDR-116/index.shtml[/link]

I used this setup on my original Gripen and it was fine.

Jim