Bucksakemmer, As I said in the other thread, 1/8 inch change at the nock end of the arrow will affect your arrows by 8" at 20 yards. By switching to 3 under, you have raised the nock end at least 1/2 inch, that's why your arrows are low and why 3 under shooters have a closer point on distance than split. Just observing a fact, not a judgement about the merits of either way.