Anybody know of anyone in the Columbus area that works on S&W revolvers? Got a new 642, and want to get it smoothed out after I put a couple hundred rounds through it. I was an armorer in the mid 80's, but haven't opened the side of a Smith since we switched to the autos. Tossed all the tools and notes that I had, and not sure if I remember what parts get honed down...thanks.