When we had the kitchen remodeled 18 months back or so we got all new stainless steel appliances. Stainless ain't stainless!!!! Shows every little smudge, fingerprint, etc. Question is, the stove has started getting burnt marks by the most used burners. How do you clean that stuff up? We've done the barkeepers friend, baking soda paste, white vinegar, and a few other things off the shelf. Got some of it off, but doesn't look like it used to. Back to enamel or porcelin next time. Any secret way to get more of it off?