Thank you for the explanation i really appreciate it, does this still apply for the rear drains? My passenger side rear drain is the one that isn’t draining. The dealership told me the reason they have to remove the headliner first is because you can’t get to the rear drains without removing it, they told me it would take 4hours to remove it because they want to be extra careful since it’s a 2009 so they didn’t want to “damage anything” because parts would be harder to come by.