Help please.....I have a NCE radio system that works well except with Genesis second generation AB-F units.  I believe the decoder is made by MRC.  It works well in DC but will not accept a DCC program.  I have tried Decoder Pro through a computer and it will not work either.  The AB F units have a direction and speed control and sound but no bell or whistle sound or lighting effects.  All these effects work under DC and I cannot program DCC to turned off completely.  I have contacted Athern, NCE and MRC with no help.  Does anyone know how I can program these units on an NCE DCC system?  Thank you.  Jim