In this video we see how important it is to maintain spine your spine tilt throughout the backswing. You can see here why it is vital to allow the arms and body pivot to work with each other and not independently during the golf swing. I also show the difference between an arm swing and pivot driven arm swing and why we must have leverage to create correct impact alignments.

I am sure you have felt the vibration up your arms as I described here. When the wrist angles are lost early on the downswing ‘clunked’ golf shots will occur. Work on getting the weight into the left hip socket as you are moving through impact and resist the temptation to flip the clubhead at the golf ball. Use your pivot to move your arms and those pure shot will happen more often.