Lets be brutally honest.
You have a medical problem and a potentially serious one and we are all talking about AAT / suing CASA, specialists etc!
There's a reason why they don't want you flying an aircraft right now.
I applaud your approach of finding what is actually wrong and setting up yourself with some alternatives in the mean time. Smart thinking.
Perhaps try AMCO at Virgin or similar although not sure if they are still running that out of Melbourne now. Your experience may help you a little.
Good luck and I hope you get to the bottom of it.