I flew a few hundred hours in MBZ in the early seventies when working for AAC (Australian Aircharters) of Moorabbin. It was unusual in having Ray Jay turbochargers and a trailing HF aerial. With the tip-tanks, they had to be selected briefly taxing out prior to selecting mains for take-off. Failing to do so they wouldn't transfer in the air for some reason. We even used it to fly newspapers to CBR, 340 kgs by memory. The seat position would give me a crook back for days. It also had at least one wheels up landing when the original owner 'forgot' landing at AY. I think it had another one many years later.
I will keep my thoughts to my self about how I feel about this 'aeroplane' there are a few vocal fans on these boards who think otherwise.