I don't know if it's possible to get actual tennis instruction on here, but I thought I'd give it a try. I like to hit big, powerful serves with heavy control rackets. I have tried using lighter rackets but I can't stand hitting with them from the baseline. Over the years, I have developed some serious shoulder pain that can go anywhere from the front by my pec around to the back and all the way to my shoulder blade. The reason I get this is because of my stroke mechanic. I use too much of my arm and not enough wrist. I toss way out in front of me and sometimes I even wrench my lower back. I am wondering if there is a way to adjust my delivery to still be able to attack but not strain my shoulder so much.... For example, would I have less pain if I hit more to the left or right, higher or lower, using slice or behind my head or maybe even set up my wrist in some way to get more snap / support.... Is it better for a shoulder to hit a kick serve, slice serve, or a flat serve? I would love to see a video or something. I have considered getting a lesson with a pro, as long as it's someone who can work with a big server. Anywho, I'd love some thoughts. Thanks, everyone!