Went down to the local hardware store and bought a foot of metal screen, the type used on screen doors and such only much heavier, almost like chicken wire. Cut out a piece to fit nicely and zip tied over the front of the existing plastic rad guard. Call me a worry wart but it gives me alittle more piece of mind to know that the radiator is more protected against moderate size pebbles and debris. Of course it doesn't help in case of a spill or a tree branch.