It would seem that you have a choice to make Geoff. Take up Anthony's kind offer to diagnose the issues with the amp and perhaps fix it, in which case you should end up with what you wanted initially, or you can continue to pursue Mr Wood for the money via the company you mention. Either way there will be extra costs involved. I think I'd bite the bullet if I was in your situation and send the amp off to Anthony, it would be far less stressful plus I'd have a properly functioning amp to do with what I wished at the end of it. One thing is for sure, Anthony's provenance and reputation are solid which would definitely help your cause should you choose to sell it on