Yet another 6 volt regulator died on me. It was a US made one sold by Standard Products. Actually, it gave me several years of good service before failing. I pulled out another US made one that I had in reserve that I got from somewhere else and it was dead out of the box (first time that happened to me using a US made one). I bit the bullet and went looking for another solution. Bus Driver had posted previously suggesting trying Wilton Auto Electric, so I thought I would give that a try. It took some going back and forth to get it working properly, but I am happy to say I am the proud owner of a 6 volt system with electronic ignition and regulator.
No more corroding points for me on that Cub. Of course it would have been cheaper to convert to 12 volts, but that is not what I wanted to do. Wilton Auto Electric can be found at http://www.wiltonae.com
I am passing this information on for the benefit of others on this forum and have no other interest in the company other than being a recent customer.