Forget the hassles of re-foaming woofers. This guy has figured it all out. Read all about it in the eBay listing for these unfortunate L7s.
http://www.ebay.com/itm/120780892374...84.m1423.l2649
Anyone need a pair of L7s for parts?One woofer had the surround wear away, so I improvised a new one as can be seen in the pic. This was supposed to be a temporary but it works so well that I kept it. There really is no audible difference between my surround and the regular one a at any volume level I have tried. Of course, if you plan on blasting them, you will probably want to replace it properly.