I've used a product by Meguiar's called "Plastic-X" I used on my tailights to remove a small scrape with paint on it some pice of s*%t left for me as a present in a parking lot. I was skeptical that it wouldn't work but it did. It's basicly like a claener-wax for plastic and it doesn't leave a haze either. Also I tried claying it and it didn't work so, good luck to you...