Problem seems to have been ta possible combination of sudden incapacitation in an aeroplane that was out of CG limits and with only a limited amount of height to recover.
If they'd been further west they could have had an extra few thousand feet to play with; if they'd been with in limits the same seems to apply
What was odd was the small gadgets on the rudder cables (tho they don't think they had any effect) - strange that someone would modify them and not think they should be approved?