I recently found my first esl's, Acoustat 1+1's, and it turns out one of the large low frequency transformers has been arcing for some time and has a burned spot on the windings. I tried using several layers of Corona Dope on it, to no avail. I guess my question is, does anyone know if there is a person who rewinds these if you send them the core? Or does anyone know how to go about getting a replacement? The other speaker sounds amazing and I'd love to get these going, together. Thanks for any leads in this direction