What is the purpose of these, the angled bit that fits between brake and pad?
http://velobase.com/ViewComponent.aspx?ID=07247d39-2114-4055-9f25-8131c4e22bbe&Enum=117
http://velobase.com/ViewComponent.aspx?ID=07247d39-2114-4055-9f25-8131c4e22bbe&Enum=117