[JasTDi]

Hmmm that's a good one. I'm guessing its a Petrol? I'm in Canberra as well. How do the linkages look? It sounds like the clutch isn't disengaging but you said that it works fine when stopped.

My other thought is with the synchros. Can you match the engine revs to the gearbox when trying to change down to get it to mesh into gear?

Cheers
Jason