I play o10 295 customized to SW in 330-335 range - have about 4.5 grams spread under the bumper and balance to 6+HL with lead tape on handle pallet. I find it has plenty of power and stability like this. I have been using multi mains at 52 with a poly cross at 48 but I am going to increase both 2+ lbs now that weather is getting warm.
Try tinkering with lead tape.
Or, tinker with strings - lower tension, new type of string, or adjusting mains and crosses to multi (or gut) mains with poly crosses would all give a touch more power.