https://www.subaruforester.org/vbulletin/f322/end-all-all-window-gusset-fix-342233/
basically you clamp the triangle section that holds the mirror and your tweeter together, I can verify it works, just don't grab your windows when you close your doors or you'll have to redo it periodically.
basically you clamp the triangle section that holds the mirror and your tweeter together, I can verify it works, just don't grab your windows when you close your doors or you'll have to redo it periodically.