Found a fix via the Ableton forum that I'll share here:
"If you are using Ableton 12 then go to Library -> Midi Effects -> CC Control
Set the midi cc from the drop down menu of one of the custom knobs. You can then map that to a hardware controller. You can also add CC Control to an instrument rack and map a couple of the knobs to a macro of the instrument rack and shift the min/max value for it within the macro map settings on the left so that you can control multiple cc control knobs with the instrument rack macro within the given min/max values that you choose.
If you don't use Ableton 12 then you'll have to download a max4live device and add that device to an instrument rack. There are plenty of midi cc m4l devices for download on the website."