Thanks, Steve, for your kind note and most informative reminders. Believe me, I was the first one who had alerted my editor about the "flopping" of Diamond Head. But it turned out that the designer did it for aesthetic reasons (it appeared too slanted with aligned with the words and other images on the cover). But after considering the importance of the iconic image, we have decided to restore the position. What you saw was a version that has not been updated.
As for the other points raised in your email, I can only let the book speak for itself. I'd be most happy to communicate with you again after you, as I hope, will have a chance to examine the book. I'd love to hear what you would make of it.