there is a removable slotted cowl that serves no apparent other purpose than to re-seal the right side windshield wiper pivot screws, look at the screws you can't reseal on the left side pivot and allow water to penetrate the rather pourus skin on the insides of the ape-illars? If there is no other benefit to having it there, I may be inclined to delete it as it seems to me to be a rather nice place for water to gather and do it evil deeds.....