Probably you should gradually add 3 grams at the top hoop, then 6 grams, 9 grams 12 grams (initially start at 12:00 and gradually spread out till it's about 10:00 to 14:00)?
Occasionally when i grab my lightly leaded racquet (@3-6 grams), i can already feel the additional oomph without adapting to my altered swingspeed too much.
Passions are the gales of life. -- Alexander Pope
Tour 89, Vantage 90 & PS90; Alu Pwr @63 lbs., & X-One @68 lbs.