I have been asking HPI questions about the Savage X and the reverse module and whether or not the 2 way radio that comes with it will work..their response was, "No, the 2 channel has a mixer in it so you will not need a 3 channel radio". Can someone explain this to me? I was under the impression that the 2 channel radio with the Savage X would not work with a reverse module and was therefore considering the LST2 or a 4.6SS kit and buying a transmitter, etc. separately....thanks!!