After 18+ years in storage and 2+ years of work, I'm just finishing restoring the mechanicals on my Tangerine Orange '68 911L. I've now turned my attention to the interior and I've pulled my radio out to get it fixed. I've got a beautiful original "Frankfurt US" unit that needs some work (no sound), and I'm looking for suggestions for somebody who can do this work. I live in Chicago but assume I will have to ship it to an expert.

Does anyone have any good suggestions for me on this?