Has anyone ever had this issue before? I'm currently playing with a Wilson KBlade 98 with a heat shrink sleeve so the weight is slightly higher than stock. I've hit with heavier racquets on occasion like the Wilson nSix-One 95 and the Wilson Pro Staff Tour 90. With either one of those racquets, I don't find that I need to adjust my strokes much or anything. Basically, I can pick up either one and play as if nothing has really changed. However, when I've tried adding weight to my KBlade, I find it terribly difficult to play the same way I do. In theory, I feel like I shouldn't have much trouble adapting as I can pick up a heavier racquet and still play fine. Yet that is not the case. A heavier KBlade 98 seems to throw me completely off. Anyone else have such a problem?