Nick the reciever is fine, BUT I am also using just 2 4000 mah packs. not 3 packs. SO my setup is different than yours. I think I moved the top tank (brakes if I remeber correctly) to the area between the main fuel tanks, I have a chunk of foam rubber there with my start gas tank, and the air tank wedged into it. My flight timer is set on 12 minutes with a P-160 on it and depending on how much I am into the throttle I am in to the hopper or just about into it by the time I land, I get into the pattern as soon as I hear the timer.