Quad ESL 57 repair

I have some older working Quad 57s that I would like to have re-built. I live in the Seattle, WA. area. Is Ben Openshaw still doing repairs in Idaho Falls or is there anyone in the Northwest that works on them? Thanks.
Greetings, True Audio out of San Fransico does restoration and modifications on Quads. Dought you will find better work anywhere else. Happy listening
Correction to my last: it's "True Sound" not True audio, out of San Fransico
Thanks! I will get in touch with True Sound in San Francisco.