To answer the question... Our noise was a high pitch ‘wind whistle’ that started at about 40 mph (depending on wind direction/ speed). It very quickly increased in loudness when coach increased on up to our normal 65 mph. Hardly could hear each other talking on the DP. Using the iPhone app Sound frequency meter the sound was pinpointed to be at the lower rubber gasket on the passenger side about 14” from the approx lower center of the windshield. I applied blue painter’s tape all the way across the lower edge of the outside windshield about 1/4” below the gasket and applied black silicon adhesive. Dried overnight. Removed the tape before leaving and No Whistle as we reached the normal whistle start speed. Now we just talk at normal level. What a difference!
