Hi,
I have fitted a Kuehn NO25 decoder (German company) to a loco for a friend of mine.

On my layout, with a Roco Multimaus command station it operates perfectly.

However, on his layout, which uses a Bachmann E-Z Command, the loco behaves rather erratically. At start up, it stutters, stop- starting and the headlights flash until a kind off 'sweet spot' is reach where it runs smoothly. Same thing happens as it slows down.

I'm guessing this is some kind of communication miss-match, although the CV settings I have look pretty normal.

Anybody know what the likely cause of this is?

Thanks a lot.
/r