I stumbled across a bargain deal on 3 new BLX Blade 98´s and bought them. They are a very light racquet though and i will ofcourse play around with lead in some well chosen places on the frame. I also took them in 3/8 ostead of my normal 1/2 grip size so i could use grip enlarger and make the frame 17 grams more heavy in the grip and also more head light. Has anyone on TT tried different balances, weights etc on the BLX Blade frame? Result? Anything to watch out for, to think of in specific? Is the grip-interior hollow or foam-filled?