Guys, I'm kind of in dilemma, hope someone can share some light. This is about migration/adaption of hard string; from a medium/soft string user. How do you do it? I've been using medium feel/high repulsion string all this while NGB98@28lbs on my VT80, BG66@26-27lbs on all my other rackets, mostly head heavy. And yet to try a hard string. Recently I bought VTZF, and strung with BG80power @27lbs. Power is massive (not sure if it is because of VTZF or BG80P ). I can really feel the "hard"ness, feel very flat with no vibration. But when it comes to normal stroke (clear, drive), I need to put more effort than I normally do. Then I had a chance with a VTZF strung with BG66UM@26/27lbs, and it turns out my normal stroke is superb (flick of wrist would send the shuttle baseline to baseline). I can feel great repulsion from this string. Despite bg80p rated with high repulsion, I can't feel it. Is something wrong with my technique? I notice power comes naturally with tight grip on bg80p, and it drop with a loose grip. I used a slightly loose grip for normal stroke (as in fingers apart, firm grip, but not tight) Those that accustom to hard string, do you encounter any difficulty when you try medium string?