I have a lm prestige mp strung with luxilon timo 17 and the vibration the racket gives off is very weird. I searched the racket for cracks and cannot find any. I am in a weird position i dont know what to do. Should i send it back, but i am not really sure if it is broken. I really only get these weird noises if i dont hit it exactly in the sweetspot. If i hit it directly in the sweetspot it is alright.What do i do?