I use to have a large forehand swing like Hewitt. Recently switched to a much smaller atp style swing like Wawrinka. I found that I am getting more power and consistency as a result but experiencing some pain in the wrist and elbow that I use to not experience with the bigger swing. Is this usual? Am I doing something wrong? I find that my forearm as gotten a whole lot larger as well ever since I switched to the smaller swing. Note that I have kept the same follow through and raccquet head speed.