If every thing else is in place, likely left shoulder disconnect, which lengthens radius near the top causing a throwing of the club out and back in; pulls and pull hooks. Make sure the left armpit flesh starts and stays "glued". It also helps to feel as if you are pulling it all back down from the top with the left shoulder. This is a "feel fix", because in my opinion, the goal is to glue the flesh of both armpits causing the shoulders to anchor both arms functioning as one unit. Doing so eliminates any worry of misplaning, either out/in or in/out.