I have a Sinn U1 with the blasted SS bracelet (non tegimented). The finish on the bracelet and especially the clasp is quite worn and whilst it doesn't bother me too much, it has got me thinking that at some point down the line I may look into getting it refinished. Anybody had this done ? Is it as easy as taking it to somebody that does blasting? Will the finish hold up as well as the original (which is fairly durable)? Do they just blast on top of the current finish or do they have to polish it to a smooth finish first?