Now that I have my stolen huben back in my possession thanks to @jbull again for doing the right thing and kelly for getitng it tip top shape and back after being mishandled. The clown scratched out the serial number it seens to be just surface deep as I ran my nail over it and it's not very deep. I was wondering if anyone has found a touch up that works on this types of parts as I don't want to strip and redo the entire part. I bought Oxpho-Blue Professional Grade Cold Gun Blue (Cream Formula) which looked like it would work but it had no reaction. Any ideas would be greatly appreciated.