Hey everyone, I just acquired this awesomeness... 1979 Colt python 357 6 in (also got the 4 inch ). Its a little rough around the edges adn wanted to clean it up some. I wondered if anyone had any ideas how to get the "valley" of the cylinder clean again. Its almost like a white, rubbed area (circled). So can I clean this and get the blue back or keep it in original glory??