[drh4683]

chad, sounds like you got found some really nice sets! The ctc31 I bought from james is in good shape but I wanted a replacement fly for a back up. Like james said, he called moyer and they were out. I had problems with the fly on my ctc31 console and I called moyer on that and he said flys for the ctc31 are long gone and he wish he had tons more. I guess he had many requests for that fly from what he told me over the phone. I was fortunate enough to get one from Doug E here on AK.
I too have never had problems with the flybacks on the portables. They hold up better, probably because of the pulse regulator system which actually controls the flyback voltages as opposed to the shunt regulator that functions off anode voltage, thus having no effect on the flyback.

About finding the arcing, do you know where the arcing came from? Make sure you have the larger 3A3, not sure which letter but I think the 3A3 is slightly shorter than a 3A3C and the tube does not seat on the top of the fly when the box is shut. This results in arcing. Not sure if this is your problem but Ive had it happen to me on a couple sets in the past.

Look forward to seeing your pics.