Additional info:

I looked at the Plettenberg site and it's indeed only in German.

Chrash course:

Spare parts = Ersatzteile
Brushes = Kohlen ( 305100 at 7,41 Euro's /pair)

If all fails, they also have a button: Online Bestellung (online ordering), pm me if you need help filling it out.

Or, if that's too much of a hassle, my holiday is in a few weeks, I could drop by at Plettenberg in Kassel (Baunatal), get a pair for you and drop them in the mail, I need a spare set myself.

Regards, Jan.