Hmmm...here we have another individual who needs to learn about "The Secret". I learned it many moons ago when I used to go to the original Yankee Stadium and watched the pitchers, particularly the Big Three. I saw what they were doing and how they were doing it; they were all driving off the lower half of the body, using the legs, the hips and the torso, thus creating a nonstop flow of energy all the way up through the shoulders and arms to the fingertips. They knew, as few pitchers did, that the lower body is really the key to a pitcher's power and that was how they generated more power behind their pitches so they could throw harder and faster with less effort---even Eddie Lopat who was by no means a fireballer---and in the process took a lot of pressure off said extremities.
Our friend here needs to learn this, learn to work with it and master it. They may not have called the starting point this, but a good place to begin is with the "Hershiser drill" which aims at getting the hips---the connection between the lower and upper halves of the body---fully involved. There's no special equipment involved here, just a fence or a wall, and getting this involvement is the first step. As for the stride, I don't think it has much to do with it; every pitcher's stride length is different, and maybe a minor adjustment would be all that is needed. What is really needed is more explosiveness---if you watch Mariano Rivera in action you'll see this. A good pitching coach will help. :baseballpitcher: :baseballpitcher: