This is a bit off topic, but the Spektrum for Futaba radios will work in the Lynx 3D. I used it in mine after my receiver went bad and had no trouble at all. I eventually changed to a Futaba 3PK and was able to use the same transmitter module (and transmitter battery), but I keep the 3D around as my backup since it's basically a direct replacement. Sorry if you already knew this, but there's not many 3D people around anymore, so I figured I would share it just in case.