Sinclair, as you know, I have been knee deep into my VL BB since April. With each step, I have learned a bunch. Now, as this goes on, with smoke units: wick must be wet enough and firmly packed enough to allow the thermistor and resistor to work using the wet wick between them as a means of temp sensing; the distance between the thermistor and resistor is critical; smoke fluid used must not obstruct the latter; char must not obstruct the latter; the thermistor and resistor must rest enough onto the wick but not covered by the wick (resistance felt against the wick when mounting the board) ; lastly, density of the smoke plume AND run time is critical.
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