I have a beautiful older Weatherby O/U that i purchased, and it has surface rust on the receiver. It is highly engraved SS receiver and i was wondering the best way to get her looking new again. i have tried placing a rag soaked in Kroil on it and then hitting with OO steel wool with improvement, but not great. I was wondering if i put it in my SS media tumbler that i use for my brass cleaning, would that clean it while not damaging the engraving? Any other suggestions? Thank you in advance.