Has anyone tried using different wiper blades on their Model S? When we picked up our car in March, the detailer applied Aquapel to the windshield. Ever since then, the blades stutter and drag across the windshield constantly. Six months later, the situation is slightly better, but the dragging is still there. Another 9 months of this will drive me crazy. I've tried cleaning the blades with alcohol which helps, but it's strictly temporary. My thought is that the arms of the S's blades are not rigid like on my old Saab. They seem to be a little floppier, which might be the problem? Can anyone suggest a solution or different wiper blades?