Im my experience, SYD is the real tricky one.
It is about to become even more tricky for 3 reasons:

1. Back to the 767 means only 24J total.
2. No more HNL-YYZ (from May) means even less total seats available at the pointy end.
3. The most sneaky, SYD-YVR will always show C0 even if there is an empty seat for either SYD-HNL or HNL-YVR because the flight # is for SYD-YVR. Very often one can get an empty seat for one of the 2 segments but you really have to push hard for it. It won't show up on its own.

MCM.