Hi guys,

I have an Epiphone Riviera Nick Valensi:

But I would like to replace the cheap crappy plastic nut.

I know the width is 1.68 inches. But when I look online, I can't find the right one.
I've been looking here: http://www.stewmac.com/Materials_and_Supplies/Nuts_and_Saddles/Slotted_Unbleached_Bone_Nut.html

Can you guys help ?
Also, I play with .11 strings. Is this an issue for the slots ?

Thanks in advance!!