I took a chance on an F, and have had it out twice so far... First NEW pistol I've bought in probably over 6yrs. Anyhow, that's the only lingering question I have. Has anyone experienced any rust? I can already see faint scratches on the slide merely from contact with the molded plastic bench at the indoor range. I've seen a couple other posts regarding the same tendency for scratches on a local gun owners board. I'm hesitant to try and get after them even with something like Flitz, for fear I might take off some of the black color along with it. Does anyone have input on this? Thanks!