I have a problem with debris getting into ventilation system on a 2011 Ranger. It gets in through the large hole around the windshield wiper arms where they connect to the drive shaft. Has anyone figured out a way to prevent debris from going down the holes?

Ford didn't design some things very well. You can't take off the cowl grill to remove anything under it which would seem to make it difficult to service the windshield wiper drive linkage.

Thanks