When I extend the windshield on my ‘15 Chieftain more than 2/3 of the way up, I get an annoying noise/whistle at speeds above 45 mph. The annoyance comes mostly from the left opening at the bottom of the windshield. If I stick my hand in the opening, the whistle stops. A little from the right opening, but mostly the left one. Anyone else have this problem? Looking for suggestions to remedy the issue. Thanks.