I would be very surprised if the Factory wouldn't repair that finish if you send it back to them.
I have a M442 with satin nickel finish that I have carried every day from 1993 until today. I fire it every trip to the range. In 2003 I noticed that the nickel was peeling on the front of the cylinder. I sent it in to S&W and it was completely refinished and returned at no charge.
I know the two guns are different in material and finish. My point is that, unless there is evidence of some misuse, the Factory is usually good about repairing modern guns.