Hey, I've been playing for 2-3 years in a club, I'm pretty much a beginner. Lately, I'm experiencing some very sharp pain in the outside portion of my upper arm after competitions. It started when I switched to a more head heavy no flex racket, X-Feel Blast from the super flex X-Feel Lite. I don't want to switch back, I'd rather fix my poor stroke technique, however I'd like some help with pinpointing the things I need to work on with the forehand stroke. My coach sometimes complains about my stroke technique, he use to say that I should be more relaxed and that I should take the shuttle higher. But watching myself play for the first time recently, it was very shocking seeing that my stroke technique was so bad. Could anyone help me pinpont this more specifically? Here's a short clip of me playing (in black t-shirt): http://www.youtube.com/watch?v=HEjja43labU It looks as if my shoulder doesn't rotate enough and that I'm mainly using my underarm for the clears. The issue of pulling forward with the racket before a stroke is a bad habit i knew beforehand of, but maybe it plays a part in this.