I don't work on guns for other people. I just tinker with my own. You really should have this done by a competent gunsmith.
I know enough about guns to know what is in my capability and what's best to leave for people with the proper tools and training.
Edit: I just noticed that was...
It will probably need a new hand (also called pawl). And it will require hand fitting by a competent gunsmith. Possibly a new cylinder stop.
Sometimes you can do a quick fix by peening the ratchet slots on the cylinder. I don't like that fix myself.
It may need additional work or parts...
I've heard of people having them Ceracoted.
But I don't worry about mine. If you carry it in a holster every day it's going to eventually be worn anyway.
My name is John. I'm from Kokomo. I'm mostly going to do some reading of threads now. I'll be doing some posting later.
Nice looking website you have here.