Ok, now for some more irony. As it turns out, I ASSume too much. The woefully inadequate part had not failed at all!! In fact, I could probably have put another decade on it! Anyway, I feel safer knowing a more robust part is there to replace it. So now, what part failed?? It was the lousy, good-for-nothing, weak Curtis-Albright gazillion amp SW-200 contactor. No problem, I have a shiny new Kilovac to replace it. So I was about to replace it when I thought to myself: these are rebuildable. Maybe I could take it apart......