gollf shafts

hi - i have a 910fd 13.5 3 wood with a regular kali shaft in it set in c2 and i hit it about 250 -270yrds. i cant see to improve on this with my 910 ds 9.5 driver with stiff kali shaftirrespective of what setting its in. i tend to hit a high ball and loose distance with the driver any thoughts on shaft options. my swing speed is between 90 -100mph

 

thanks