I sold my FJR and the new owner did not need this taller windshield.  I'm 6'4" tall and 215 lbs. and this windshield eliminated all helmet buffeting for me.  In the full bottom position, it was very nice around town up to about 40 mph.  In the full up position, it was very nice at highway speeds.

These California Scientific windshields have vents cut in the bottom to allow airflow up the back of the shield to eliminate the turbulence normally caused by wind flowing over the top of the shield.  You can see in the attached pictures how it looked on the bike.

The windshield is in very good condition.