I've had my PRS Santana SE for around four years now. However, I've been wanting to do some upgrades to it for a long time, including the nut, but I haven't really thought about it until now. However, I'm at a loss as to which one I need to get. For example, from this stewmac page, which one would I need? http://www.stewmac.com/shop/Nuts,_saddles/String_nuts/White_Bone_Nuts.html Any help would be greatly appreciated.