Wally, John Edwards was one of the pilots of the Catalina you mentioned and I flew with him at Air Express, a really nice bloke and many interesting stories. VH-EXG if I remember correctly. I often wonder what happened to all those people. MBX was one of Australian Air Charterers first Aztecs followed by MBU and that awful 'F' model MBQ. Ice would build up on the 'F's elevator horns and pump the stick back and forth, really horrible. MBU was an 'E' and quite nice for a 'Aztruck'. Ah, the good old days.