had the same issue, can't seem to find those forks anywhere in the world! just some ideas i have are, magnesium front rims with the original rim brakes, work fine on my rear wheel now. stainless front forks, will take welding better for the caliper nuts. other than that i'm out of ideas. just remember of you use magnesium quick release rims to use the original tabs that hold the rim in place on open forks, just put it on the inside of the fork. almost lost my front wheel