It is very very difficult to find ignition breaker points that are servicable today.Echlin and Bluestreak if you can find them or NOS.Over the course of my life time I have filed and re gapped hundreds of point sets.My remote cottage has a 1929 Kohler generator the point set for the magneto has been obsolete for many years I file and set the points good for another 500 or so hours.For a quick clean I use emery cloth spray contacts with brake cleaner then pull a business card threw. I have probably done these points a dozen times.
Kash
Kash