If I were to map the knobs on my X1 to something, would it be possible to restrict the knob to an asymmetrical range on the software control?

So, from detent to the right is 1:1 but from the detent to the left only goes through like 10% of the available software control range spread out over the travel of the knob?

...without just switching it into midi mode and losing all the default mapping stuff.

Is that possible, or is it a pipe dream?