Hello, Except for the serve, my strokes (bh, fh, slide, volley) are perfect when hitting the ball hanging from the ceiling, or slow ball such as those that come to me from 2.5 - 3 player. For faster ball, I can get in position (including unit turn) to hit it, but somehow keep miss time the take back and/or forward swing to hit it either way too early or too late. What's the best way to fix it? I've tried ball machine, hitting with better partner, but the improvement is oh so slowly, almost not noticeable. Many thanks!