Hey Russ, I’ve been looking at that spoiler shot you provided:
What I am seeing is that the top of each feather on the spoiler has a re-enforcement, like a small bubble ridge that goes from the back edge up past the feather root and a few inches back from that. Maybe to stop those feathers from ripping off?
you can see the arch and shadows of those ridges if you blow up the photo.
Am I seeing things?
Dom