I have 400 hours in an ASW19 and it does just just about the same,
thermalling slow then getting a gust and a little bit of up stick she would
roll 180 degrees to the high wing to almost an inverted position then
gravity would bring the nose down and start spin entry but recover
instantly the stick goes forward.
The ASW20 is almost identical except having to slide the flaps negative
for the speed your doing and I have flown other types that do exactly the
same, eg: Ventus A/B are aggressive in the entry as well
Overall the I rate ASW20 is one of the best at low speed handling and low
level
thermalling.
Just take the glider up high and explore the limits of the behavior so you
know
the point to which you can take her.
If it really concerns you then get winglets fitted ,best price I found was
from M & H
in the US $1100-$1600 (model dependent) plus fitting, that lowers the
stall speed and noticably changes behavior at slow speed,
improves the L/D as well ))
gary

"Ventus B" wrote in message
om...
I have been considering buying an ASW20, ASW20B, or ASW20C. I knew
they were champions in their day and still have a lot of admirers.
However a few folks from my club say they have some nasty spin
characteristics. Specifically, that they have a tendancy to not only
immediately spin when stalled, but will go inverted as they spin. Can
anyone eloborate or corroborate? I normally only hear good things
about the 20.
Respectfully,