to find out if a racket is head heavy(doesnt matter which brand) put your finger in the middle of the racket. if the head is leaning down its headheay. if the grip is is leaning down its headlight. if neither well then its even balaced. and to find out the flex you just get one hand on the head of the racket and the other hand on the grip. pull in opposite dirrections carefully until you feel a bend. if that was super easy flexible stiiffness shaft. if alright then medium flex. if hard stiff shaft.