The instructions show:

I can not figure out how the assembly using part B64 is supposed to be in relation to the other parts.
I have looked through my reference material and searched extensivly online and can't find any good pictures of either the real thing or a model of this box, or even a decent drawing.
If anyone has built this PE set, has a good pic of what it should look like, I would appreciate any help.
Thank you
James