I'm just settling into this rooting Lark, and I've tried out several ROMs already, but I really want to know more about Set CPU and kernels. What does a Kernel do? Can I use any, or are they phone specific? And Set CPU. I've read up on it a little, but I'm not sure if it's a matter of staying within certain parameters or just whacking it to the top setting? As always, any advice would be warmly received. Ta.