Hal, your head looks so far aft! That's a no-no in my reading and experience, but I see it on the Bacchetta racey boys as well as on you. Maybe designs are better now.
If I used any more leg extension than you are demonstrating, my knees would have me shot, but five hundred miles is more than enough to know for sure. Your hands do look high to me too, and your hip angle is wide open, so I'd consider another chainstay extension, for climbing power generation this time. (No you can't have the old one back. I like it.)
-Dan