I purchased this S&W 642-1 in 2018 NIB and have roughly 600 rounds down the bore. It’s one of my favorite shooters & carry guns, especially in the summer months, but that may have been the issue in combination with my choice of holster. I mainly use a “Mission First Tactical” minimalist IWB holster and my sweat over the years in the summer months seemed to have eaten the anodized finish off the aluminum frame…and only on the body contact side and exposed grip. It took a turn for the worse this summer. I’m not over weight or stuffing this pistol under a fat gutt & actually very active. I just recently polished off the remaining anodize finish in the really bad spots of the frame and just covered it w/rubber grip tape. Has anyone else had this issue? If so, how did you deal w/it?