Just buy a Miele dishwasher. They actually work and they work well. No need to bother with black-market or "vintage" or commercial stuff. Just pay the high price (ok, it's all relative) and enjoy never having to care about this crap again.
Source: owned too many dishwashers over the last decade. Paid money to make problem go away and to my surprise it actually did.
Source: owned too many dishwashers over the last decade. Paid money to make problem go away and to my surprise it actually did.