Brad54,
I had/have the same experience after buying a set of cables from one of the suppliers. Your description of the lever arms and flat stock is also what I have and the play in the cable does not allow for proper tensioning. Is the cable supposed to run through the frame's structural member or attach to it?
I whould be happy to hear if you find out more info since my brake is too loose to use in its current state.
HB
