Pmun

So my wife and I already booked one leg of our flight from YYZ to HKG (stop over) then to KIX for September on PE. We didn't have enough points to book the return leg until recently. Now we're looking for the return leg on the first week of October but from searching the BA site and also talking to Alaska, nothing seems available. There are plenty of flights from any airport in Japan back to HKG but we can't find anything from Sept 29th to Oct 6th from HKG to YYZ. There is nothing in any class. In anyone's experience is it worth waiting a bit and checking back again? How likely are seats to open up or is it probably a done deal by now. We can see on Cathay's own site that the seats are available for AsiaMiles so the flights aren't sold out. Should we wait or should I be looking for an alternate way to get home