Check out the link (with translator): he mentions swapping in various XMLs (all on copper boards I think and something along the lines of “fritzl 15 mega”
I believe this is the torch he is talking about (5th torch one down): Some Custom lights - New update 25.07.2015.
As for the brasso: I will try some this weekend now that I have a dead XML on my hands, can’t see it having any real negative effect.