The only reason I mention it, is I've seen plenty incomplete or slightly damaged Rolls sets in my antique hunting, and the sellers asking price doesn't always line up with it. I'd certainly defer to your expertise David, as you are an actual user. I think this thread could be a big benefit to the lurker section as there are still a lot of Rolls sets around, I always see a couple in every antique place I go to, and its good to know going in what are going to be repairable problems and which are not. I think most of the damaged ones I've seen have been restorations gone wrong, but like anything, you try hard enough, it'll break.
How would you go about getting a new blade? is it just a matter of finding another set with a good blade, but other damage, or can they be found NOS or repro?