Thanks for the link. I had spoken to John Kepert re the Puss Moth crashes and he agreed that flutter was the likely cause of Hinkler's fatal crash in CF-APK. I had also spoken with John Watkins who investigated an Australian crash of a Puss Moth. There was a witness who observed the wing seperate from the aircraft.
I have not been able to find a copy of the Italian Report in Australia. I have had no luck finding one in the UK but if someone has the right contacts I would certainly appreciate help in finding a copy.
The wreckage of CF-APK was carried down from the mountains and buried at Florence Airfield. Hinkler's body was buried in Florence. As far as I know no wreckage was transported to the UK.
Thanks for your help and interest.