Hi JC - Noreen has already been in contact (I've sent you a copy of the e-mail) about replacing the bits. It was more of a followup Question on what else over time could go wrong.
Thanks
Nathan

HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs