Here is my problem. I got a nasty shoulder injury some years ago (torn labrum). After having a surgery, post-op recovery, PT, etc, eventually, I started playing again a couple of years ago. I was not able to use PS 6.0 85 that I have played with before the injury. I have switched to i.Prestige that gave me definitely more power on the serve and ground strokes. Still there was not enough power on the serve; moreover, my shoulder was hurting every time I played. Then I have tried a PD and was using it quite successfully for more then a year; I found the lacking power and my shoulder felt OK. But then another problem has appeared: a really bad tennis elbow. So, I switched to PK5G and gradually TE has disappeared. But now again, I miss that serving power of PD. When I try to serve harder and force it a bit my shoulder feels really bad. Please, advise what kind of racket I should get. I need something as light and powerful as PD but definitely much easy on the arm. I am not looking at other sticks of PK because they are out of business and it is almost impossible to get them here in Europe (my PK5G I got online without demoing, because I new it was a sure bet TE therapy-wise).