I just purchased a brand new 870 Tactical and I noticed that in lighting of home that the finish is pretty crappy its a dark grey color with dark patches here and there. How long do the finishes usually last on expresses? And there is a chip on the bolt right next to the extractor. Its tiny, probably a little smaller than the head of an ink pen, should I be concerned about this? Will it get worse under firing conditions? This is my first shotgun and I knew going in that the QC on the express was hit or miss.