I just got my hands on a stock head and my buddy that has a shee told me to shave the head to 30 thousands , is that right. plus i have a degree key as well but not installed yet . I have no engine mods done yet either, just stock exept for fmf gold series pipes and k&n filter , so i'm just woundering if i risk blowin the engine. so if I get this shaved what should i do to my shee so she wont go boom . thank you for the help