Offizieller Kommentar
To be honest, I would have suspected that mixer to be years old, not just one year. Unfortunately as you're beyond the 1 year mark, it's not something that could be covered by warranty. I don't know that a replacement faceplate would be any less or more durable than what you already have, and the cost on a replacement part may be prohibitive (never mind difficult to obtain).
My personal recommendation would be to consider a "skin" (like a vinyl decal, custom cut for the size of the 900NXS2 and all its buttons/knobs), as they're reasonably priced and you can customize the graphics.
