[ccomer1955]

Good point about the rheostats. Ron, I have a Triplett 2314. Would I set switch A to the correct circuit setting for an 01A, switch B (the filament) at 6.3 and switch C at zero while leaving the levers in the middle position (neither down nor up)? Then, go have a cup of coffee and check back in around 15 minutes later?

Here is a link to a photo of the 2314: http://www.radiomuseum.org/r/triplett_tu..._2413.html