Before you discard the useless stock screen, think about this item. I tried this add-on for 6,000 miles through various weather conditions and it performed flawlessly. It can be adjusted in many different positions to manipulate the air to either maximize air flow right at you, if you're in a mesh jacket, or be flipped up to block the flow of air, if it rains, Autobahn tested. Just another option.

http://www.revzilla.com/motorcycle/m...-spoiler-blade#