I'm curious if scratches/scuffs on a screen would reduce its performance? I notice it doesn't go off at every construction sign like it used to and other times it gives me little warning of a police officer (usually when they're in eyesight it goes off) I know it could just be that they don't have their radar gun on, but it happens to often so I feel its the radar detector. Its a Bel RX65 and its about 5 or so years old. It's in the same spot on my car that it has been for years, and it worked great when I got it.
Point is, could the scratches on the screen be ruining it? Is there anything I can use to remove scratches without ruining it? (Like the stuff people can spray onto a CD to get rid of the scratches). I don't know what type of material the screen is..