I am very new to the world of DCC and have received for Xmas the new Bachmann Dynamis.I have managed to fit 4 decoders into varies locos (the 3-function Bachmann decoder 36-553. I have a problem with one of the loco a DCC ready Hornby King Willliam .It runs perfectly using DC but when on DCC it runs fine until I slow it down almost to a stop at which point it jerks forward a couple of times before stopping . It does the same thing when it starts off at a slow realistic speed until it has got going( it is set to 28 for speed).Can anybody help me or have I got a faulty decoder