The widespread use of Robinsons and their lack of suitability as a training machine (due to number of accidents) has driven down training standards in the industry as a whole - well done Frank!
Having done full downs in an R22, then seeing how much RIDICULOUSLY easier they are in anything I've been in that's even slightly bigger, I have to say There really is no reason to do full down autos at all.. If you can't do a successful full down auto in a big bad "real" helicopter after just practicing power recovery autos and hover autos, then damn dude,...?!