Thanks for the advice. I'm 5'11" tall, and the top of the stock roadster screen sets about 5" below my horizontal sight line. I think my helmet, a Z1R, may be a bit thicker than most. It doesn't have a chin cover. I'll try putting the rubber edge on. I did try putting my left arm in front of my face and it didn't have much effect. I'll try the more specific test suggested.
How is it the lowers affect the airflow coming off the top of the screen?
