I have a Rapido N scale TurboTrain with DCC that shorts if it triggers the MRC A520 reversing module section of the wye on my layout. This only happens when the train must trigger the module. If the module is already aligned with the proper polarity, the Turbo goes through with no problem. Also, none of my other DCC locomotives, single or in consist, have problems with the reversing section. Is this because the TurboTrain has an engine with a decoder on each end? And if that is the case, would I have the same problem with a helper on the tail end. Is there a work-around?