Noticed last night when I stopped for a smoke I had caught my waterproof trousers on the silencer of my SR250. They are the cheapo polyurethane lined nylon and have left a nice residue on the chrome, so before I attack it with I don't yet know, does anyone know the best way of removing it. I thought about warming it up to soften the residue and trying to scrape it off with a wooden spatula. TIA Bill