It's interesting how far you have progressed using the Resmed S9 Autoset as compared to older data with the F&P CPAP at generally comperable pressures. At the current zoom level, there is very little to say about the flow data. You have made steady progress in results without any remarkable changes in setting pressures. I think you can look forward to continued improvement, but may also see some setbacks. Sometimes, it just takes time to adapt to the therapy, and you have done that. Plenty of people get frustrated and quit.
I suggest backing off on your data monitoring some. From this point, you want to look at longer term trends and daily monitoring of the data will not help you do that. There will be good days and some that are not so good. You have your settings pretty well dialed in and it can be tempting to have a knee-jerk reaction to a bad day. Overall this is effective with room for improvement. Snore and flow limitation is at low levels, and you have some hypopnea that may or may not respond to a slight minimum pressure increase. If you increase EPR, I would recommend increasing minimum pressure by the same amount. The "pressure support" may help reduce hypopnea events, but not if it comes at the price of a lower minimum EPAP pressure.
Thanks for the reassurance about Flow Level and other things. I'm a bit OCD regarding making improvements and I suppose I'm applying this to my therapy. I coach swimming and I'm sure the kids sometimes curse this part of my nature - the kaizen principle of gradual improvement. However, when they make it to State championships in strokes they didn't expect too (not an easy feat here in QLD) they see the benefits and accept that this works.
However, all I'm going to do from now on is look briefly at the figures on the machine as I get up each morning.