I have a ZW-C powered by Lionel 180w Powerhouses. The output of the ZW goes to the input of the 10amp booster and NCE command base. My Legacy command base is connected to the U post on the A handle. I have tried the MTH locomotives with and without the Legacy base plugged in. The engines run as I would expect conventionally. I have not done a 55-55-55 reset on them yet as I would expect it not needed on brand new never run locomotives. My one other DCC locomotive I upgraded with a LokSound decoder operates just as I would expect it, so I don't think there is any issue with the DCC command base. These quirks are not deal breakers, I still think these are wonderful engines, and I'm glad I can buy new DCC O gauge locomotives. It's just a pity they don't function the way the manual says, that's all.