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What are the two variables on the box? One on the back and one by the tubes? The one in the back doesn't do much of anything that I can see on a meter, but the one by the tubes will run the dead key up and down? And where would I get the big resistors and chokes for this rascal. The one on the driver looks pretty bad. Was looking at it earlier and got my first taste of electrocution. My neck is still twitching...