Hi James - thanks for posting the photos of your fish! Too bad about the hole in the head problem. I once had something similar but treated the fish with an antibiotic to fight the heximita protazoa.
http://www.theaquariumwiki.com/Hole_in_the_Head
In my case I was lucky and the fish made a full recovery. I also did more frequent water changes and paid careful attention to cleaning the filter more often.
There seems to be a lot of debate about what causes hole-in-the-head.
I am trying to remember back to when you got your fish James. For some reason I remember there being some Koi in the tank at first? I could be mistaken as I might be thinking of another fellow who has a BBXB.
I will give you a call in the near future. I'd love to see your BBXB in person.