The logic with a gasser and electronics is to keep the radio gear as far away from the ignition as possible. (Unless you're using those neat fiber optic servo leads...)

I decided to put the tank over the cg, the receiver and 1800 Mhr battery under the servo tray, and the throttle servo all the way back just in front of the main servo tray. I am using a Hitec HS-81MG on the throttle, strong and FAST. I made up a piece of ply to fit the HS-81 on the throttle servo tray they give you. I then screwed it to two hold down blocks that I glued to the sides of the fuse..