I have never used these things called hints and have them turned off; but my experience is that ancestry posts from databases reflect the source consistently. I'm not understanding exactly how you are getting so many different sources from the same database.
For example, I have 87 citations to the source "1820 United States Federal Census" for ancestry postings from that source. I also have a source called "1820 US Census" from years ago when I was using micro-film census records.
I have seen complaints here that some people that sync are getting sources duplicated. Do you sync?