Hi i come from Slovenia.About four years ago i bought a wilson k factor six one tour 90 racquet. I ordered it from *e*b*a*y.de, from Germany but i cant remember the store.I played with this racquet for three years and i played really good,then about one year ago i bought the wilson blx six one tour 90.I bought it in Slovenia.Than i realized, i played for three years with a fake becase it is lighter about 310-320 grams with string,has a different balance about 320mm and is 5mm longer.The beam is the same: flat, also full and 17mm width. The frame size is 90 inch and has a 16 to 19 string patern. The specifications that are written on the racquet are the same as on the original. I would really want to buy a racquet like that again becase the old one is already unstable, maybe cracked.Can somone help me? Best regards!