Discovered something I'm not good at, building cinder block walls. I got the job done, but it's not pretty. Here is the hole I had to fill: And here is what it looks like filled. Code allowed me to do this with treated wood, but I wanted the job done right. I need to put a "skim" coat on it so that it blends with the cast concrete. If I can do a decent job of that the irregularities of the cinder block should be covered.