----- Original Message -----
>
> If there is interference with the seat stays, in my experience it is
> usually the result of a larger brake bridge hole than the brake bolt, so
> the assembly rotates down. The right way to deal with this would be to
> insert a sleeve, but that requires machining.
>
I believe there are several sources for sleeves (Delrin or nylon, maybe other materials) used to assist the use of nutted brakes in a recessed Allen fitting. Wouldn't these, possibly modified, cure the trouble?
Jon Schaer
Columbus, OH