I haven't been back long, I've experienced 1 sit personally with you and watched you in 4/5 today and I have to be honest, they weren't good at all. You take no time to listen to people, you go into the situation with your mind already made up, I saw you more than once start the sit with the words "You're getting warned" which in my own personal experience with you lead to a false warning which was later removed.
You need to start going into sits with a completely open mind, listen to every side of the story, look at it from all angles before deciding someone is getting warned.
You also need to look at when a warning is actually necessary, every little thing doesnt need a warning, more than often you can talk to someone, explain the situation and give them a chance before handing out punishments.
You're also very argumentative, you seem like you have to be right and will constantly argue in a sit or even here on the forum instead of taking a step back and controlling the situation as a staff member.
Just my thoughts, tried to be constructive.