Well, I goofed.
I drew up my circuit wrong. Which meant the board was wrong. Then to top it off, I think I reflowed it at too high of temp and cooked some of the APA102Cs that are going on this thing. Live and learn.
I was able to "fix" both of the problems with the board layout enough to test everything and make sure it worked, enough. But now I have a new order for boards on its way. At least the layout didn't change so I can use the same stencil.