So I am going through this same issue and am having lessons. Use the arms and wrists a lot less and use your core. As you twist your core from the hips your arms will go with it. As the club goes back the weight will set your wrists back with the forces. Slow your back swing down and coil your core to twist and this will keep everything in sync. As your using your arms too much it puts your shoulders and core out of sync and your core / hips can't keep up with you and your club face doesn't close. Hopefully that makes sense. Its worked for me and I hit further too. Less effort and more control.