Thanks! I'll give this another shot on my end, likely this weekend given my schedule. For anyone else browsing this thread and looking for help, I did have success with Oxygen Pro's USERDAW setting, using MIDIIN3, setting up an ACT controller, and learning three sets of controls:
Sliders
Transport
Knobs
The knobs were acting flaky for a bit (would only toggle between two pan settings, and not smoothly pan from -100/+100), but they soon righted themselves for reasons I can't explain. So my setup is working, though I would like to know how to map even more functions using the Shift button. That, however, remains a mystery to me.