[Equipment] Evora Full Strange Readings

[WymS]

I recently started using the Evora Full face mask.  It is the most comfortable mask I have used.  But it gives me unusually high AHI readings, usually > 20.  My other masks usually give me AHI < 10.  Also odd, both the Obstructive and Central AI readings (on Resmed 11) are usually 0.0, which has never happened with any other mask.  Getting 0.0 readings on OI and CI when AHI is > 20 seems strange.  Has anyone else had similar problems with the Evora Full?

[Crimson Nape]

What mask type do you have the AS11 set to?
- Red

[WymS]

Full Face Mask.