I had my 15-2 done recently, along with Master Revolver Action pkg, Polish&Blue. They recommended a new cylinder. Done
Now beauty is in the eye of the beholder, as they say, but I think their polish & blue is outstanding. Just one shooters opinion. Took awhile to get it back, about 2 months from start to finish. And the cost was more than I paid for the piece. Now have just under a grand in this .38 Combat Masterpiece. But I'm more than satisfied.....so much so, I sent them my CB Master .22 for the Master Revolver Action pkg. It does not need the polish and Blue. The .22 arrived there on 3/25, so far not a word from S&W. I figure at least 2 months to get through there system and back to me......
Good Luck