Anyone had luck redeeming Krisflyer Miles for Air New Zealand Flights

[JennyH]

I understand that Air New Zealand doesn't release premium class reward seats to partner airlines often, but I was wondering if anyone had managed to snag a business class seat using Krisflyer miles? I'm looking at travelling from Melbourne to Auckland (or Wellington) and I have a lot of points with Singapore. Maybe there's a trick with timing or select routes that people have found?