It works! Hooking up an adapter to the breadboard seemed to do the final trick. My battery was still reading around 8v but I guess the circuit was dropping it too far to power the IC's. Someone mentioned that could be an issue a few posts back.
Thanks to everyone for all the help, setting up an audio probe will make all of this troubleshooting much easier in the future.
Thanks to everyone for all the help, setting up an audio probe will make all of this troubleshooting much easier in the future.