Carholme - what I meant was that you made a statement about the ventral fin which to you was the absolute answer but, to people reading the post, was just the opinion of another guy on pprune who may or may not know what he is talking about.
If you want everyone to know you have extra inside knowledge of the Puma/332 when you make a post then mention it at the time.
As a tech rep then are you a pilot/test pilot?
As Shawn says, this phenomenon has been widely experienced by many pilots and test pilots and the Aerospatiale answer for the Puma was, from what I have been told, yaw/roll divergence aggravated by the particle separators, fixed on later models with the large ventral fin.