RVD;
Here is a picture of what alot of us Q-500 racers do and where we locate the V-tail or if your running standard (Rudder and Elevator servo's). Only Reason alot of us do this is for Balance and short coupled controls (Means no slop).
You will see that the Servo's are mounted behind the wing. Very easy conversion.
Hope this helps.
BTW this isn't a Dominator