I've added 12 grams of Babolat leadtape to my Babolat Pure Control Team Standard - 2x3 grams at 3- and 9-o'clock each so the total weight of the racquet is 354 grams. But what will the the new balance and swingweight be? Is there a formular? BTW after adding the lead the racquet have become much more stabil and powerful - plays with solid sound strokes and drives through the ball much more powerful and clean - it's a dream now and has totally different feel. Comes highly recommended!