I have been testing racquets for the past several months and narrowed it down to the Babolat Pure Storm and Volkl DNX V1 Oversize. I have finally chosen the Volkl DNX V1 Oversize for a variety of reasons although it is a lighter racquet than what I was looking for. How can I increase it's 10.4oz weight to approximately 11.0oz without changing the 4.4pts Head-Light balance? Is adding lead to the 6 o'clock position the best way to go as indicated on Tennis Warehouse? Thank You.