Im 6.4'' and use the std seat & screen with Wunderlich deflector on my ''14 TS. The deflector is set forward & at max height. Lids are either older Shark RsR2 or Airoh Storm. Airoh is an ovaled shaped lid, and Shark is a rounded shape. The round Shark has been much more quiet and stable (No buffeting at all) in comparison to the newer oval Airoh, Airflow over the screen, extension and shape of lid is quite obviously related , in my lanky experience.