Black deposit on Ankarsrum 6230 bowl scraper
I've been using my AKM 6230 since I purchased it on amazon.com July 9, 2018. I have noticed that quite often there is a black deposit on the bowl scraper which, unless I am careful, can be mixed into the dough. This is unsightly and potentially harmful. I'm wondering if this is a problem with the bowl since that is the only surface which the scraper comes into contact. I am absolutely sure there is no foreign substance on the bowl as I am very careful to fully clean it after every use. I can also say that I never experienced this problem with an older DLX version of the mixer that I bought used on eBay.
So my question is whether other owners have reported the same issue.