This seems to be a typical problem with HD windshields. To the point where I took my quick release windshield off, as I do mostly boulevard or coastal riding along the ocean now. Very little on the turnpikes. But the windshield does help when it gets buggy. The problem is that air comes under the bottom of the shield, hits the curvature of the gas tank and explodes upward into the vacuum behind the shield and smacks me in the face. I got to feeling like Curly or Shemp being smacked in the gizzard by Moe at about 45mph and up. It rocks my eyes like a pair of dice in a shot glass and blurs my vision for the road ahead. I asked Treasure Coast HD about this and they said a pair of their chrome, fork-mount wind deflectors (part # 57400143 in their 2015 catalog) will do the trick to stop this (like mentioned in the thread above here). So I am now going to try them out since a member here has confirmed it.
Thanks for the tip!