I think collaboration might be a good idea. I'd like to try to tackle the codes myself first, and then if none of us can get anywhere, perhaps we should link up through private messages and try to help each other out. How does that sound?
That's pretty much what I had in mind. If you can break the code before it comes to that, all the better, I've just run out of ideas myself and would welcome a collaborative effort. So if anyone is ever interested and they have the entire series A or C codes, send me a message sometime.