I ran into a snag when I got ready to install the radio gear. You guys that are flying this plane now, where did you mount the battery pack??? I put the receiver right behind the fuel tank and now there is no place for the battery. The manual says to put it under the fuel tank, there is no way it's going there so what's left. I sat the battery pack on the belly pan just to check the CG and it's at about 5 1/2. A little tail heavy, where do you guys have the CG set???