Hmm. That does sound kind of strange. Your dimensions sound fine to me. I'm wondering some basic questions...Is the stave seasoned properly...is it dry enough? When you heat treat the bow, do you give it a slow deep browning without using an oil?
Did you bring the bow's overall length into reflex before tillering it...that is reflexed the body of the bow without regard to your recurves?
I'm curious about the third picture. Is that your brace height? That isn't the amount of set you speak of, right? Brace height looks low, if so.
It does seem odd though because your bow, dimensions, and it's appearance look very good.
Hope it turns out well for you.