Genghis,
Thanks. It's very reassuring to know that my preferred method of losing excess height (various kinds of stall entry and resultant spin practice) is safe, even if I hold for a few revolutions more than "normal" to observe more closely what's happening.
Still, it scared the hell of out me the first time I did a spin in the Junior - I didn't realise you could go that far past vertical!
grob103