Here is the flier from Aruba

I use two mini digital servo's for the elevator Hitec HS-5245MG and as an engine I use a Webra 1.45. To balance the plane I have the receiver next to the wing tube and my battery (2300 Nimh 6V) right in front of the fuel tank.
No problem at all with balancing when u use the 2 servo's.
Regards,
Jock