Kagamuga,
Strangest thing is no one else’s curiosity has been piqued by this.
Mind you, the Baron may have had ferry tanks installed thus only room in the nose locker for the drugs. And the second crew member was there to assist with fuel transfer via a hand operated pump. Unless, of course, there were no ferry tanks installed.
I recall that the AFP had eyes in Bulolo, you’d think they would have known exactly how much was loaded.