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Mine too , thought someone had went mad with an ice scraper , but when getting a dent removed, even with a sheild , the window got scratched with his tool.
Windscreen annoyed me so much i just got it replaced. They dont polish out either by the way.
its the window guides in the doors going hard then becoming abrasive on the glass. door panels off, gals out and fix the guides, like felt pads. while ur at it lube up the rails