I had totally forgotten the rego and would have had to dig out my logbook from that period to check, so, thank you for the information. Had some incredible fun in that machine.
First jolly was a few circuits at Essendon.
Being empty with little fuel, I didn't have to go outside the airfield boundaries - poor old Ralph was a bit wide-eyed though - complained because the only time he could see the runway was on short final - I guess he had never flown either parachuting or glider towing.