I have recently acquired Dapol's D and D1 class locos. Both run smoothly on DC but with the Imperium decoder they are rather jerky in performance. I have about 25 other locos, some proprietary, some kit built, with various makes of decoders and they all perform as one would expect. It was suggested to me that there is a CV setting which allows the loco to be run on DC with the DCC chip, and this should be changed but which CV, and to what value nobody seems to know. The Dapol website does not have any information about CV settings, not even the basic ones. Maybe I'm not looking in the right place. Is there an alternative decoder I could use? Any help would be very much appreciated.