Need advice for taking off the oxidation from guitar parts.
​
I've been having some problems with the intonation in my guitar. I tried removing the screws, sanding them and oiling them, but nothing changed. So I thought of removing the strings and I did (don't worry they were pretty dirt so I had to do it anyway). I took off the bridge and cleaned it, and also removed the Saddles, the Screws and the Springs. I steel haven't screwed back on the sss (now that I'm writing it I'm noticing it's a little confusing sorry) because they're really oxidazed and I need to clean them. Any advice?