Hi, I'm 14, and I'm pretty small for my age, and have small hands. My hands don't sweat much, and I have a carbonex 8000 with a towel overgrip, and i recently bought an armortec 50, but I have not changed it's default grip. What should change to? Are there any good grips out there? I can't buy any online, though. Someone told me to get the G5 grip then overgrip it, but I don't know. What's the difference between bigge grips and smaller grips? Is it better for people with small hands to get small grips? And one more: For example, if I have a G4 racket, and I need it to be G5, is it possible to change that to a G5? Is the G(number) the wooden handle on the racquet, not including the default grip already on it?