Ray23,
It is probably too late for you as you have, no doubt, already past the 1000km mark!?
However, I agree with Ian (even if he is a fellow Kiwi!). For the benifit of others (and future "break-in") : -
What I do, (and I have had SOME experience) is, I tape the twist grip with masking tape or white surgical tape, wraping it around adjacent to the throttle cable housing. I mark the housing with an index mark (marker pen or similar) and put an index mark on the tape at 1/3 throttle opening. I then try to stay under 1/3 throttle opening for the first 1000km. (Do not LABOUR and do not OVERREV as Ian says). I has worked well for me.
Cheers and happy motorcycling,
Vic (AKA: Ah Boon)