ha, I am so scary. Thank you JS for taking time to give me the advice. I feel more motivated to make changes if I understand the mechnism behind it. I might not fully understand "Do bend the racquet arm at the elbow, but don't lead with it by bringing it back. Doing this puts the elbow behind the body." I thought low elbow and behind the body is the right way to increase swing path before contact. I am confused.