Scott, those covers are tough. Is it me or does the lip around the edge not go around completely?
I don't know Joe. It looks like an aberration in the photo to me. Good point. You can see two dimples (or pimples) of some sort in the center of the shape too.
On to another part:
What about this shot I posted at SSMs about the center part connecting the front and rear body being something like this part of an F1 car? I know it's not much to go on, but may lead somewhere. This is a Ferrari T4 body, but the intakes don't come flush to the surface as needed.