Resistance is what you want to measure.
With everything assembled, remove the battery and measure resistance from where the battery would be. Positive contact for the battery and adajacent body for ground (with switch pressed). This way you're measuring the entire working circuit. You're looking for a resistance close to 2.0Ω. If it's up around 3.0Ω then it's probably due to too much kanthal. To check that, remove the kanthal and replace with copper wire instead. You should measure a resistance close to zero or very very small. You want about 2.0Ω of resistance in the circuit and almost all of that due to the kanthal.
With everything assembled, remove the battery and measure resistance from where the battery would be. Positive contact for the battery and adajacent body for ground (with switch pressed). This way you're measuring the entire working circuit. You're looking for a resistance close to 2.0Ω. If it's up around 3.0Ω then it's probably due to too much kanthal. To check that, remove the kanthal and replace with copper wire instead. You should measure a resistance close to zero or very very small. You want about 2.0Ω of resistance in the circuit and almost all of that due to the kanthal.