It works! The blue compound got the scratches out. I still have a few scratches here and there, but for the most part my test area has a mirror finish.

Lookin' good!

I started working on the next section. I had to use the black compound and the sisal wheel to get out the marks from my scotchbrite wheel where I had deburred the holes. I also spent some time with the green compound and got about 1/3 of the holes done with the green. The idea is to use each successively finer compound to get out all the scratches left from the previous compound.