So I started doing the programming on my Arduino to make the big GLaDOS follow the little GLaDOS. Moments later the solid core, 24 AWG wire I used to connect everything on little GLaDOS started breaking loose from the solder joints.
So I replaced all the solid wire with stranded. It looks (and moves) much better!
Meanwhile, I have two axes working, and should finish the others tomorrow. I burned out the eye light by hooking directly to 5 volts without the resistor. Fortunately, I have another, so that will be replaced as well.
Look for more video soon!