I would honestly go to DIYAudio or Audiokarma and reach out to the folks there for some thoughts on where to send it.
Understand the reluctance to ship, and you may get lucky and find someone near by. But, better to ship to someone who will do it right? Again, the person you are looking for, could live within driving distance and may be a retired tech who is working out of their basement - someone only be found through community circles.
Secret handshake is a must…