brake cable pinch bolts for Zeus Supercronos calipers

[foz]

as above... I the bolts appear to be OK, but one of the nuts has stripped the threads and the other one doesn't want to clamp the cable tightly enough either

These are designed so that the nut clamps up against the cable, not so that it clamps the cable by pulling the bolt through the caliper arm, if that makes sense. Anyway, it seems to make it harder to clamp the cable tightly enough.

I should be able to find a standard nut to fit and at least be able to ride, but having the correct domed nuts would be nice

thanks!