Got annoyed with the sound of dragging flaps all over the shop, so these are now off the car and won't be going back on.
Noticed that 50% of the plastic clips were missing from the rear bumper when I was under the car, not too sure if these were not put back in when the new bumper was installed or if they have fallen out over time.
Had a bunch of new ones sitting in a box from Subaru, so it wasn't a problem