Cool. Thanks everyone for the suggestions. I had thought of Novus as I used to use it to remove scratches from convertible top windows before I graduated to convertibles with glass rear windows. I also seem to remember seeing the Meguiar's when I was buying was for the SLK. Griot's Garage and Eastwood sells a lot of plastic polishes as well. Mine has quite a few fine scratchs and three deeps ones. It also seems to have fine cracks at the top of the case where the core anchors are embedded. I may start looking on ebay for a spare case.