I just went to a great page that showed me with pictures how to adjust the CPAP to 11 CFM that i used to have on my 420 G PB GOODKNIGHT. The Clinician screen is easy.
I will get them to switch the pillows for a nose cup then off to sweet dreams. My wife who has ears like a BAT says that the RESMED elite 9 is quieter than the 420G.
I will keep it as a Back-up.