ANYBODY KNOW WHAT TO USE TO POLISH NICKEL PLTD S&W'S? I HAVE A COUPLE THAT HAVE CLOUDY LOOKING SPOTS ON THEM. NOT SCRATCHED JUST LOOK LIKE THEY NEED POLISHING. ABOUT A MONTH AGO, I BOUGHT A MODEL 27 6'' NICKEL WITH TARGET GRIPS ON IT. I TOOK THEM OFF TO PUT ON PANEL GRIPS, AND THERE IS A LINE...