Just wasted 2hrs of my life with QF agent trying to rebook some DONE4 segments in Asia, DPS-HKG-SIN-HKG. Using EF, changing POS accordingly i could find sufficient D availability on each segment, but QF had different availability.

Anyone know the most reliable source of D availability for DONEX other than pin the availability with QF agents?

The EF availability was dynamic with each POS, so I am confident in their availability tool, just would like to know if the airlines have it different or just that i have to accept the agents cannot change their POS, so i'm stuck with whatever the call center has.