Originally Posted by
NatUp
Obviously you can Dremel them, but the point is: why not just install with the stop turned backwards and do literally no work at all, especially when replacing during say a tour when no campy-specific cables or Dremel tools are available?
I wouldn't try to reduce the size of a cable head more than a very minimal amount. Inside the head the wires are frayed apart into a
floret around which the head is die cast. It's the shape of the floret which ensures that cables cannot come out. If you dremel the head you might hit the floret and cut some stands, maerially weakening the head.
In any case, the solution of simply reversing the fitting works fine, though the real solution is to use cables that fit correctly.