I straightened out the edge of the cavity with the template and the palm router. Thanks for pointing it out. Believe it or not, I didn't notice. I guess I was looking more for "does it fit" than "is it straight". I went back and leveled out that part of the template so it won't happen again.
I did test the low E tuner. There's plenty of room for the tuners I'm using.
Paint, paint, paint... tomorrow morning it's sand, paint, paint, paint... lather, rinse, repeat. The pics look a little gray, but it's just being photographed in the shade.
Black neck, black cavity cover, and some bullet-proofing with matte finish. It's great - there is a good thickness of finish, but you can't see or feel a thing.