Adjusting HammerSpring - Daystate Wolverine 2 HP

Hi, I am drawn to the new wolverine 2 HP with the carbon fibre tank in .22, but am slightly put off by the relatively poor shot count in comparison to my FX Bobcat .25 and FX rifles in general. My Bobcat in High power gives me over 40 good shots but the Wolverine HP in .22, only gives 28 or so. I wonder if anyone else has had success in backing off the hammer spring to lower the Wolverines power from 60ft/lbs down to approx 35ft/lbs? If so, how good an effect did this have on flattening the power curve? Thanks.