so i was wiping down my tank with a microfiber towel and i accidentally had the towel touch and melt on the hot exhaust header. was really bad, i mean it was caked on! luckilly the internet to the rescue (as i thought to myself, this has had to have happened to somebody else). saw many options to try, like the oven cleaner, acetone/nail polish remover, steel wool, etc. however, the only item i had was nail polish remover. so i tried that, but had no impact on the melted caked on plastic. i then came across information of using a copper penny to scrape off the residue. they actually stopped making pennies out of copper a while back, so it was noted to use like a penny dated before 1987. didn't have anything older, so figured, i would just try any old penny. luckilly it worked like a charm! and no scratching of the stock header. after i scraped off the residue, i then polished the pipes with metal polish. will definitely be more careful about using those microfiber towels, as i never really gave it any thought but they are mostly made of polyester (basically plastic). best advice is to wait til the bike cools down before any wiping down.