So I'm thinking of grinding down the top edge of the flipcover where my ear rests to help ease the pain I get after talking on the phone for a while. As everyone knows, the design of this piece is terrible. In looking at it, I think it's possible to carefully file or grind the top edge without too much trouble and without compromising how the flap sits atop the buttons.

My question is, has anyone tried this or anything similar? My fear is the damn thing would crack. But I've got to do something. (And BTW, I know I can use an earbud but that's not possible all the time.) Thanks.