I have also heard the rumours that the rudder trim was found fully hard over to the left. It may have been but who knows if it was that way prior to impact. I very much doubt the rudder trim theory. From my experience I would suspect that the aircraft is almost impossible to keep straight and would very quickly veer off the runway resulting in an abort. I have experienced the friction nut scenario in the aircraft during an early morning take off and it definitely gets your attention. I have run the Essendon loose friction nut scenario in the Sim and ended up very close to the same spot as old mate.
Groggy