I'm guessing the Maya, like the Revs and Monsters, really needs to be mounted a bit forward of recommended. Every Head product I own or have tested I mount forward 1- 1.5cm... It absolutley makes a difference. Skied the Great Joy at recommended and that seemed fine though.
Isn't the Head Great Joy a woman's ski? If so, then the binding would be mounted 1-1.5 cm forward compared to a the mounting position for a man's ski.
But, since there isn't a mans..err unisex...version of that ski..is it really mounted forward? Also, not all women have a lower center of gravity and need or what a ski mounted forward. This generalization and blanket design does not help or is good for all women.