Hmm, how many nub problems are there, and is it something your bog standard Joe could fix if he's got average experience of electronics? If we're talking a fair amount, like 30+ units, you'll have to repair them or get people to actually want them.The offer might be juicier if you offer people a discount.
Personally I actually need the nubs, and sadly gone are the days that I'm able to do fine soldering or I might have chanced it. In all honesty, I would already have offered my once excellent electronic services to help out, but bad health left me with some co-ordination problems and I've lost all confidence since the tragic "smoking CPU" incident that still haunts my dreams. Oh.. the humanity...