I am a do-it yourself kind of guy, but unless you are very well versed in S&W Gunsmithing and have ALL the proper tools, patience and skills, I'd let that job be performed by either the Factory or a really good GS. Removing it and replacing it without doing any damage to the original finish is a challenge, and on an old gun like that you don't want to have to refinish the whole revolver. It also depends on what the condition of the gun is, how much it means to you, and weather or not you are OCD like me!
The second option is to leave it the way it is. I'll just assume that this is NOT your CCW or SD gun, and that fast reloads or perfect 100% operation of the swing out cylinder is nice but not a necessity. Sometimes on these old guns things are better left alone, UNLESS whoever you send it to will guarantee you that you will be fully satisfied when it comes back. Tough call, good luck.
Chief38