...this could be tough. the gran compe's are a minimal 37mm, I used my mycrometer, looks like no more then 35mm is what I need.. My best bet may be to get 39-49 arm's with a lot of meat at the top of the brake pad slot to file out 4mm. the Compes have that elliptical slot, so they are out. Thanks for the link, though. I emailed them, bet they know a solution. A reversed drop bolt (ala Sheldon Brown) may work too, but man it would look funky