That's about the size of it John. The Main axis, given the postion of the remants of the Mk Temple, situated near the current sanctuary, indicate the axis was never changed from the MK to the Ptolemiac period. In fact, it was maintained both West and East as the Temple expanded out of its MK confines in the NK. The Secondary axis, is postioned as conveniently as possible to connect the Main temple to the Temple of Mwt, and for no other reason.
But as Kat as indicated, we'll have to wait to read the thing, before getting to grips with Bauvals theory.
Cheers
Ian