@exarkuniv Apologies for my ignorance. Is it the PlayBox part of it that is the rebuild? Sorry I'm just now getting into all of this and am unfamiliar with the lingo.
It is impractical to provide support for a system that neither you nor we know how is configured. *Pre-built, aka third-party (anyone who's not you or the RetroPie project) systems are not supported. The only supported configurations are the official SD images available on the download page or installed on top of an existing OS using the setup script.
We will gladly help you through the process if you'd like to start over with the default image and build a system yourself. Or, you can contact the author of your custom build and ask them to provide support for the system that they have configured.