New to this, need help setting up machine for UARS

Do you take any meds of any kind? If so, what?

Since UARS is more arousal related I suggest you learn how to scroll through your flow rate breath by breath to learn to spot arousals.
It's a way of measuring sleep quality. Lots of arousals from anything mean crappy sleep quality and crappy sleep quality means you feel crappy during the day.

http://freecpapadvice.com/sleepyhead-free-software

What makes you think you have UARS? have you ever had a sleep study? From what your machine data is suggesting, even with huge leaks you're not logging breathing events....which points to not a significant problem, even UARS. take a detailed look at the flow curve, if it's nice and round at the top, consistently, you're breathing fine.