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Hi Mark, Have you considered hiring a local SEO consultant to help you with this? The list of questions in my original response are things you need to go over with someone in person to whom you can disclose all the details of your unique business. I don't specialize in troubleshooting issues like this one, but perhaps you could book some time with someone like Andrew Shotland, Mike Blumenthal or Nyagoslav Zhekov in a consulting position to see if they can advise you in an actionable manner and in full possession of the details. Sorry I can't offer more specific advice, but this really sounds to me like a case in which you need one-on-one help from someone who is looking at your listing and history with you. Hope this suggestion helps.