I think I've finally cracked my problem with inconsistant shots. I watched some videos online of pros frame by frame and their head just staying in the exact same position through the stroke even into the follow through. Fed is amazing at this. I tried it today and it really helped. I did feel like the guy hitting to me was about to hit me in the side of the head doing it though! Some pros in pics seem to be looking very slightly ahead of the ball meeting the racquet though.