Hey all you customizing gurus... A racquet has the following specs... Head Size: 98 sq. in. / 632 sq. cm. Length: 27 inches / 69 cm Strung Weight: 9.8oz / 278g Balance: 9 pts Head Heavy Swingweight: 323 Light racquet that is head heavy. Want to add 2.2 oz to handle to increase weight for greater shock absorption. What will this do to balance and swingweight? How can this be calculated? TIA!