I've only had my 995 a couple of weeks, and love it, but looking at different reviews here and there I see that some complain about the receiver cover having a rust problem. I always keep my firearms "oiled up" and in a "dry" gun safe. Is this a problem with the product or the way they are maintained.... I was thinking of Dura Coating the receiver cover if it will be a problem in the future. Anyone else having a rust problem ???