MP7.5
On my ROO 2 the wing control surfaces/ elevons are one piece from the factory. I use 1 x Hitec HS-5645 504 oz/in holding power and 168oz/in torque digital servo for each elevon control on my ROO 2
I could see no need to seperate these control surfaces and mod to two servo set up. However with that in mind, if I was to fly this model with a higher thrust turbine I would recommend doubling up just to be safe on the ROO's elevon servos...