I have a Micra6 set that I like very much - and am happy with the sound in my small living. But the grille covers are getting really ratty looking - the corners are worn off and they're really faded. I know I don't need to use them but I worry about protecting the speakers themselves. I sent an email to Athena a couple of weeks ago asking if it's possible to replace them but haven't gotten any response. Does anybody know if it's possible to order new covers? TIA - sheureka