I had a Sterling case repaired at a luggage shop in my small city.
Check to see if you have one also. John Barton helped as they had never seen one like this before, altho they had repaired other Q cases.
It was a matter of pulling the bottom nails and dropping out the bottom of the case and the lining pulled out.
I imagine that JB also knows how to disasemble an Its George if they need to know.
At a seriously long shot, if you can't get another case maker to repair it, I can give you the address to the luggage shop where I live and make sure they do it proper when they get it. It might be a bit more expensive proposition as I live in Canada but you would probably have to ship the case out anyway. It would be approx $25 one way to get the case here. Its an option. The cost of repairing my case was $75 but I had a lot of things redone on it. Yours probably wouldn't be as much.