Hi, I'm Fabio from Milan, I have a white Roco z21 and I use RocRail. It's my third HM7000 and I had no problems with the first two. However, with this third one (a 8 pins on a Roco DR044) I have the problem that every two or three days (random... more or less after 5/6 hours of work) the CV19 (Consist Address) changes from 0 (default value) to x (where x changes everytime)! independently!!! The first few times I didn't understand why the DCC control was non working while via App was OK... and I had to reset the decoder. Then investigating I discovered that the cause is the changed value of CV19 which activates a consist 'randomly' and so it doesn't respond via DCC to his original CV1 value PS: it happens on the main track (where I have 15 locos) only on this decoder, neither the other two HM7000 decoders change in this 'mysterious' way Thanks Fabio