Hello! I am Kai and responsible for racket tuning and stringing. I’m also doing it on the ATP and WTA Tour. There are some well known players who i work with. It is very important to play with the exact same rackets. Your play will improve because the rackets will feel the same. This is also very important for the pros so the rackets always have the same feeling. And that is why it is important to you. Your play will improve. I am finished with the adjustments on your rackets. They are now exactly the same. You will immediately notice it. Try it out!