Does anyone have any experience in replacing the fabric on their Klipschorns? I have a pair and one of the "wings" get damaged in moving them to my home. I would like to replace the fabric on both speakers anyway as they are 1984 models, and show a little wear from being 30 years old. If anyone can direct me to some site where the process is explained, or does Klipsch offer replacement "wings"? Any help is appreciated.