Am I alone in finding that on more modern aircraft seats (particularly the 'all leather' 'Recaro' types), it's more or less impossible to raise the arms so that they fit snugly in line with the seat backs? They go about 3/4 of the way and then stop, not that I've tried to force them <g>.
This would appear to be a problem for those corpulent pax who have purchased two seats (not that I've ever observed anyone doing this)!