It is difficult to remove the screw covers without marring the cover or the nearby cowl. Hopefully these pictures help show where the tabs are located. Luckily, the windshield kit I bought came with all new plastic fasteners.
One nut under a dust cover attaches the windshield wiper. The spring-action of the wiper makes it difficult to remove from the threaded stud, but it comes off easily while holding the wiper straight.
