> 2. Make darn sure you discharge the tube before you work on it. I've seen it said that discharging with a very low resistance path - like a piece of wire - can damage things. I don't know how much risk there really is, but I would tend do something like inserting a 100K or 1M resistor in the path to ground. The capacitance of the tube is low enough that the time constant is pretty low even with a resistor that high.
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