I apologize for being so uninformed, but I am not sure I followed exactly what you posted. So if I do a 10mm, it should work with some modification? I guess I am slow or something, but I am not exactly sure what it is you have to modify, the spacer or the grease cup and how?

I am going to a custom wheel and suspension shop tomorrow to try out some 'universal' spacers so we can figure out what the correct width is (and hopefully this guy can porovide me some more education on the subject). It would be great if I could let this guy know exactly what the pitfalls will be before we begin. Thanks again.