Your off to a GREAT startYuk, yuk. Those are my Hsu HB-1 speakers. I agree, though, that those humongous FV18s make everything else in my HT setup look small, even my 75 inch TV.
Anyway, I'm off to a good start.
Congrats on the twin earthquake makers. Enjoying reading your impressions of them.
Agree with Brian and others on moving the fronts outward in the future and tilting of center to the center of seated ear height. Moving center just past front edge of your media stand
I would (experiment) position your fronts (with an isolator feet or pad.) on top of your subs. All the way forward, slightly past the front edge of the subs. Toed inward toward the MLP. Also, if the tweaters are not centered at seated ear height. Would elevate them so they are.
Welcome to the FAULT LINE.