Reply To: 9v train track question Home › Forums › All Things LEGO! › 9v train track question › Reply To: 9v train track question December 19, 2017 at 2:14 pm #24895 JoshKeymaster there’s a grey line of purist I’m not familiar with…there are those copper strips that @laura has put on her track before, but if the intent is to say it’s all LEGO…I think you’d still need to have an asterisk for *modified.