Maybe some of you have some advice. This question is about streaks on a non M-B car. There are verticle streaks on the outside of the glass that will not come out. The appearance or pattern of the streaks is similar to how soaf looks when it dries on the windows when it is being washed. It is just not as pronounced. Buffing with a light compound has been tried but no go. Also, I cannot feel any roughness in the glass where the streaks are. Thanks.