Mine was all faded and hard to see, as seen in the first picture. Now it looks like new again, as seen in the second picture.
Used a bit of sandpaper to rough up the surface of the letters, some rubbing alcohol to clean it, and a fine brush from a hobby shop to repaint the letters. The whole procedure took about 2 hours.
Used a bit of sandpaper to rough up the surface of the letters, some rubbing alcohol to clean it, and a fine brush from a hobby shop to repaint the letters. The whole procedure took about 2 hours.