The Big E:
...and a blue and white one which I think may have been PAY
If you a referring to an Aztec located at Rabaul Airport, that may have been P2-DMG (VH-DMG) which was an Aztec owned by Graham Parmenter the local plumber. His Aztec was painted blue and white.
Didn't Airfast also have an Aztec AVE also located at Rabaul?