Thanks Gardyloo that's great (I didn't realise there was a mad-scl F option, it didn't show in mileage monkey).

With a couple of further tweaks I think I have it:

gib-mad-scl-ipc-scl-gye-eze-lax,yvr-jfk-hkg-tpe-nrt-sin-per-syd-akl-syd-lhr,lgw-gib

Can anyone see any problems with this one? Note I am making my own arangements between LAX and YVR (Going to ANC and LAS)

If not, I think we are there!

Best regards,

Marcus.