My Benelli bleeds too. I notice it when I wipe it down. I wouldn't go as far as to say that I actually "clean" it. Although it was left out in the rain back in september, onceI shook all the water out and fired it a few times you would never have known though.
My Benelli has been abused, it is kinda like a long term research project entitled "How much neglect and shooting can a Benelli take?" there is some real rust on the Rib, nothing a wire brush wouldn't get rid of, but no pitting anywhere. IME, the guns are incredibly durable. I may not be keeping my Benelli like a show piece, but even if I was treating it normally, I wouldn't wory about the Benelli Bleed, it happens to a bunch of guys I know.