Have been using this since Sept 07, and loved it. I love the groundstrokes on both sides, love the feel etc. But I am beginning to wonder whether it's not a great serve racket. Is it possible that it is a little heavy for serving? Or the head-light-ness is not conducive to fast flat serves ? I often do pure serve sessions with my backup rackets - lighter and evenly balanced ones, and I seem to have much fast serves with them. But I do not like the feel at all, and would not like to play groundies or matches with them. Has anyone else found a similar issue serving with this racket ?