Does anyone have the Switchblade 2-up windshield on a VTX1800C? If so, did you need the lowers to avoid buffeting? I am trying to select a height that will allow me to look over the windshield yet push the wind up over my head. The height that I am currently thinking of going with puts the top of the windshield between my lower lip and chin. I am 6'2" and the height of the windshield is 19". Thanks in advance for your feedback.