If you take the generator to a parts store, they should be able to have it rebuilt for you. I worked at a local parts store for a few years, and we would send gennys out all the time. I even had mine redone before I left the job. One of those unwritten benefits /bcforum/images/%%GRAEMLIN_URL%%/smile.gif
You could also find an auto electric shop, and I am betting that they can fix you up.