In more posts than I can remember, I've made numerous references to my Ibanez SR885 which I've owned for about 19 years. I'm not the handiest person, but I took some time to work with it last night. (It was my first time doing a setup by myself, making a minor truss tod adjustment, lowering the action & re-setting the intonation.) Anyway, after many years of regularly sweating on stage, I noticed a lot of tarnish (perhaps light rust.) What product can I use to safely bring back the shine of my hardware?