You seem to be holding the bow fairly high in its handle. Can't you grip it a bit lower? I'm not sure of the limb length, but in general I make both limbs the same length, and put my hand about one inch below the center of the bow. That puts my arrow about 1 inch above center. You seem to be gripping it very high, which might make the arrow shoot way above center. It's not necessarily a bad thing, but gripping it a bit lower might change the tiller and shooting characteristics a bit.