My new Tulsa arrived Friday afternoon. Never changed out a GL1800 windshield before but accomplished the task in one and a half hours. Easy instructions - thanks, Allen. Finally figured out where that annoying rattle was coming from these past three years. The setting screw in the center of the windshield retainer was missing (from the factory?). Found a metric replacement at Ace Hardware. All is quiet now and my wife remarked that she feels less back seat turbulence at Interstate speed (the Tulsa is much wider than the OEM). The vent that I ordered with the windshield provided a significant amout of cooling air. Never knew what I was missing all these years without a vent. Needless to say, we're very satisfied with this Tulsa product.