Well the local guy topped up the gas and took $180 from me, the aircon worked for 2 days
He is now on holidays in Tassie so
Took the Jeep to an Aircon/Radiator bloke in Bathurst who found my condenser was leaking, he couldn't understand how the first guy missed it so that's a lesson learned for me about the local auto sparky.
24 hours later (and another $900 lighter in the pocket) and its running like new