When I lived in Michigan I took a tinted side glass for my '62 convertible to the local glass shop to see if they could polish out a pretty deep scratch. You could definitely feel it. They warned me that it would leave a distortion but they could get rid of the scratch. The scratch is gone and you can find the distortion if you look hard for it. I took side glass for my pick-up with a very minor scratch to several shops here in Illinois and all said they couldn't do anything with it. I guess it depends on who is doing the work and how much they know.