As an ex RNZAF mechanic, i underwent training at No 4 TTS at Woodbourne sometime around 1980. It was common knowledge of Mr Smith’s collection, and the fact that if you supplied the Avgas, he would run up the Mossie. A few of us made friends with the MT flight guys and started collecting drain offs from the tankers. We filled up a car boot load of containers and drove off to see Mr Smith. True to rumour, we handed over the precious liquid and soon after, Merlin’s filled the air.