Hmm, no that didnt work (worth a try though).
I am wondering if it needs t cutting and polishing with Auto Glym. In other words, treating like a car. The only think that bothers me is that I have done the door from the top to almost the bottom with Auto Glym and if a spot of water gets on that area, it STILL goes white (with shine). So I am not entirely sure this will be the answer.