Daniel, I've been having an issue with my apdplus 2013. I have always been a one handed backhand player from the beginning and a few weeks ago I started training in advanced lessons where people hit quiet hard. For some reason I have a pain in the shoulder since then trying to follow up with the class, specially when I do the 1HBH motion. Could it be that the racquet length, stiffness or any other variable is not the best suited for a 1HBH? I have been considering demoing the Pure Storm line..