Hi Romeo, it’s possible that you may have a lemon colony. I have a few of those myself at the moment. They need requeening.
What is the status of your brood? Anyway you’re going into winter, so not a good time to try to rectify anything. @Semaphore is down your way, he would be a good bloke to talk to. I guess he would advise you to remove the flow super for the winter period.