What, when you've raped the drive/ driven rings? I wouldn't bother. Clean it out and whack some thin oil in there and it'll be louder and work a bit better, my hub's *probably* the quietest king i've heard, it's been cleaned out and had the lube changed etc but i love it, silly loud hubs do start to get annoying. If (like mine) it's working perfectly and doesn't skip, just leave it be - how does a loud hub help? (awaits "gi' us confidents mayte")