I was once transporting a semi completed M163 up the stairs in the middle of the night. The tray had the model, its sprues, paint and a number of other stuff on it.. Thats when I tripped. I just fell forward, but the model proved that the heavier bits are always the ones that are the most delicate. Needless to say production was delayed on that one. Besides the shocking paint choice it ended up not too bad..
And then there was the humbrol flat black enamel.. I managed to get almost all of it out of the bedroom carpet..