[jrblasde]

Well, I have cleaned up the transformer and repainted the bells. It's looking much better, but I have a new concern. During AC testing, I heard a loud buzzing or humming sound. It does not go away after about 20 seconds. I got so far as to test the secondary voltage (336 volts for each half--a little higher than the 320 I would expect, but it looks good). Is anyone aware of what might cause this hum?

Another update. I got a quote from Heyboer. They actually gave me a GREAT price. It's on par with most standardized power transformer replacements. No ridiculous markup for a custom design. If we exhaust all other options, I will at least have that in my back pocket.