I have an MST Fxx-D RTR and have bought the Pipes BFU 2.0. I am running a Futaba 3PV transmitter and receiver. For whatever reason the BFU is only working when brake is engaged and held or in reverse and the brake lights are only active when under forward throttle. I have reversed channel 2 and still am getting the same results. I have tried 3 different BFU's with the same results. Can anyone help with advise to correct this?