OK - I'm cross-posting with the same issue on C&V, but I'm desparate and need max exposure to try to find a resolution.
I have a 1984 Raleigh Portage touring bike that I've been working to restore. I'm down to the last part I need. The canti bosses are about 60-61mm apart, c-to-c, which is too close for any modern canti.
To add to the difficulty, the bosses are sort of the reverse of normal, in that the 3 anchor holes to anchor the return spring are to the outside instead of toward the inside of the fork blade.
I think the original brakes were Shimano XT.
Anyone know of anything I can find to work -- or better yet, anyone actually have anything they can help me out with?