I recently purchased this lot: I don't know whether it runs or not - YET. The battery is dead. I'm amazed that it still shows about 1 volt. I'm tempted to gut it & install AA/AAA's. I have a couple questions. Look at the photos of the coil. The coil cover is loose, and when closed, it looks asymmetrical. It seems as if there should be a slot in the wide cover, similar to the one in the narrow cover to allow it to close more completely over the mounting bracket/wires. It doesn't seem to close far enough to be secure. It was hanging loose, touching the arc when I picked it up. Is this normal? What am I supposed to call that thing I've called an "arc"? What should I do about polishing it?