My k95 16x18 was strung with xcel main and hurricane cross at 57 pound. It felt amazing for a week. All my shots were controlled, powerful and lots of spin. I felt completely in control. Then the performance started dropping off quite rapidly. The ball had less spin. The string bed was unpredictable. Sometimes i would launch balls to the fence sometimes the stringbed would feel quite dead. Even if i hit the sweetspot, i still wasnt in full control. i'm pretty sure it wasnt my technique because then figuring maybe i should try natural gut instead of xcel because it may last longer, i got a new string job. I got natural gut main and hurricane cross at 57 pounds again. It felt great for about a week ( but that week i played more tennis). Then it happened again. Perfomance dropped rapidly. Same stuff happened Is it poor choice or strings, tension or maybe racquet? Any help will be appreciated!