If you tilt the shield back at the same angle as the base of the OEM screen . . . you will reduce buffeting significantly. Also, consider using the top cowling mount bolts to widen the base of your new shield . . . for more rider comfort etc.
Young at heart
Motorcycles . . . my Happy medicine. We Live to Ride & Ride to Live . . .
'14 FZ-09 Street Fighter (Set up for Sport Touring)
'14 Wee2, Adventure Style "for the Real World"