I just purchased the HO digital commander with the Santa Fe GP-40 and FT-A for my 8 year old on his birthday. We were able to program the GP-40 to an address but the FT-A unit would not change from # 3. We also have another DCC equiped locomotive and we tried to set an address for that one as well. . neither loco seemed to change from three. The instructions are a little vague and we cannot change either  address from the preprogrammed setting. Any ideas?

We also have 3 newer Bachmann diesels that I would lice to convert to DCC. I have seen 2 types of decoders that can be added. Which one do I need?

Thanks

Keith & Tommy