Max weight?
Muttly
Empty weight for a P68 is about 1325 kg, and max TO is 1960 kg. (Max landing weight is less than that)
So if you had "yourself and five fat guys, like you" that's about 660 kg. I presume you had some fuel.
Looks like you exceeded both the max take off weight, and the max landing weight.
No wonder the poor thing did not want to fly on one.
I would not really blame Mussolini.