i get some as well let me explain
I am 6 foot 1 inch tall and wear 1/2 helmet. At hwy speeds I get air that hits right at forehead level and then more air comes up from bottom/sides but its more a circulation than a problem to me on the body as it helps me cool down.
back to the helmet - I had a chance to ride a R3T with the taller windscreen it moves the higher over my head.
Some people has put on clearviews whihc have the vent in the middle, some have made the screen taller, and recurved and the vent.
In the end some were happy some were not.
I am pursuing the taller option but looking for a plexi-glass guy to custom build me one as triumph runs more than i want to spend new.