I have an old S&W pistol I just bought. Its got about an inch or rusted rifling in the bore near the cylinder. Does the value go down if I have it relined? I sent away for the factory letter today so I won't if the letter reveals something important. I will also be getting some of the lettering deepened, as well as the original finish applied since someone thought it would be smart to coat it matte black. What do you guys think?