Welcome to this site Rudy. Sadly I have not a clue about this Faller system, and a quick search suggests that the last active interest was in 2017 from someone we haven't heard from lately.
I think you might do best if you post this question in the HO forum, where there is most likely to be some know-how. HTH
I think you might do best if you post this question in the HO forum, where there is most likely to be some know-how. HTH