I had the same problem in our Aria. Called Irwin, the manufacturer, and the fix they recommend is to install a set screw through the aluminum tube into the motor drive. The hardest part was pulling the motor to measure where to put the screw. Not too hard if you pull the blinds down. I probably spent 30 minutes on it.
18 Aria 3901-"The Wined Up Bus"
2016 Wrangler JKUR