This may sound strange, but I'm building a feedback system where users create nodes which are referenced from other users, in order to leave feedback about that user. As such, I'd like to be able to configure the module so that users can only vote on their own nodes. I tried setting the permissions so that authenticated users did not have voting permissions by default, but users had permission to vote on their own nodes. However, these permissions didn't add up in a way that met my requirements. Any suggests for where in this module it would be best to adjust this behaviour? Thanks.