I'm thinking of switching to a KBlade 98 from my current racket which is a n Pro Open. After hitting around for a while, I feel my strokes have more overall pop. What worries me is that using the KBlade, I can barely get any kick on my second serve. With the nPro Open, I used to be able to kick it really high but with the Blade, I'm having trouble generating spin. Is this something to do with just not being used to the racket? (I've already used it for a week). Also, what can I do to try to maximize my kick on my serve? Would stringing with alu power rough, for instance, make a big difference?