Hello guys, i play with a pro kennex k.i.5 strung with xcel power, yesterday when i was warming up my string broke up, and i borrow a Head MicroGEL Extreme from my friend strung with a standard monofilamet string. I used to have good serve but since i play with my k.i.5, i have lost a lot of pace in my serve. Yesterday, all of a sudden, i started serving great, i can say one of my best serving day ever, that racquet really inspired me some bomb serve and only few double fault. I also played very well from the baseline. The sound and the impact of the two racquet are completely different, i suppose beacuse head is stiffer and light, the head transmitts much more vibrations. The problem is that i suffer from wrist pain and at the end of the match my wrist hurt (due to stiffness + monofilament + vibrations). Now, what are the reason of my problem when serving with the pro-kennex?, and how can i find a racquet similar to the Head MicroGEL Extreme, but with a low stiffness and good on my wrist? Thanks!