We had a breaker shipped to our premises, and with our suite of CB testing equipment, set about figuring out the issue. Once the issues were found, new parts were designed, manufactured and installed in our workshop. For good measure, and whilst the unit was out for service anyway, we gave the whole breaker a good service, and ran a typical end of line suite of tests to verify not only the changes made here, but that the breaker was fit to be put back in to service and continue its service for many years to come.