Unfortunately, it doesn't appear that the eggrate from the company Gary mentioned is quite the same size. The current frame depth is 3/8 inch with what Marathon has built.
I'm just gonna cut out about 10 of these suckers, and have spares! Actually, I don't even thing you need to glue the front one (assuming yours is like mine). If cut right, it wedges in nicely, and is firm in the frame.
If you break it, simply stuff another one in. Bought in the case quantity, we should be able to make these things for about $1-$2 apiece, not counting labor to cut to size.
Ray
