I was under the impression it was the opposite.
The lower the number, the lower the sensitivity. If I put stab to the highest number it goes off every time I move my saber. If I put it on the lowest number it goes off only if I stab.
I wish I could make it less sensitive! Especially for stab and spin.
This is correct. Higher means more sensitive, lower means less sensitive. It's just like the color sliders. The higher the number, the more that color is present, the lower the number the less that color is present. I've had issues adjusting the impact/spin/stab/swing/etc. setting on my Diamonds. I think it was an issue with saving it to the board. Eventually, I got it right but I don't know if I did something different or if it just decided to cooperate. Sometimes I swear my Diamonds have a mind of their own when trying to change settings.