Anyway, this means I could pay about $500 of my own money for a new bike and then try to sell the other to make my money back, however, I am not certain I would be able to (with the broken fork) - so, after all that, I have decided to try to get the broken fork replaced.
There is only one Yuba dealer in Japan, and they don`t have any forks in stock, so I told the shop to go ahead and install the Surly Big Dummy fork. Since the BD fork is threadless, they will need to install a threadless headset and stem and possibly new handlebars.
One thing I am worried about - the Surly fork is about a centimeter longer than the Yuba`s, so there will be a slight change to the geometry - but I see it`s been done before on a Yuba V2.
Will have it back in a week.