Quick question on booking a Oneworld RTW, Given the errors that the tool brings up, I'm struggling to get the precise itinerary I want ticketed. The early flights in the itinerary are okay, but some of the later ones - 3-4 months down the road don't seem to want to work.

Wondering what people's thoughts are about going with an itinerary that the tool will allow me to ticket and then modifying it over the phone once it's booked and in the system. Any experiences with doing this? I'm looking at a DONE4 originating from NRT at present. First flight to KUL on Japan Airlines, but it could also be on Malaysian Airlines.

Am I likely to end up being ticketed with Qantas? If so (and this is problematic), any way to avoid it?