I've been watching lots of video and while we all know the legs need to lead the arms, the emphasis is on firing the legs quick so the arms are following, I get that and it makes sense. ive been trying to use my arms to drive my body forward but when I do that my arm circle slows down quite a bit. I hope I'm explaining this so it makes sense, I'm not trying to slow my arms down but when I focus on using my arms to get me out that's what happens, and it does seem to help my timing, but it also feels slow, but When I look at pitchers with great drive it does look like the arms are moving pretty slow in the beginning of the pitch then on the downswing or toe touch they really speed up. I know this is not something new, I've just never felt it before in my own pitching and I'm starting to feel the difference now of using my arms to get me out not just making an arm circle