Sprint GS3 WS Rom..Kernel? topic

Hi all, new to rooting. I rooted my Sprint GS3 running the Wicked Sensations Rom and love it so far,thanks to the team. However my battery life seems to have gone down hill big time. It was mentioned that maybe my kernel needed to be adjusted ( I have no clue when it comes to this, I'm still learning). My question is,how do I "adjust/tweak" my kernel,or is there a better one out there for me? Can someone please explain..Thanks..Phil