The Indian Touring Models (2018 up Chirftons, Roadmasters, and all Challengers) has a known issue of the plastic windshield gear failing.  This is your fix. 
 
We are proud to carry Ultracool Parts.  This is billet part to stop the plastic failures.  You will need just a few basic tools.  We will prvide that in the directions. 
 
Stop worrying about your windshield movement on a trip.  Correct the issue now before it ruins a road trip.