Instructed on them at blackbushe in the 70s -wonderful aircraft but make sure that you have full rudder...one joker adjusted the differential brake which restricted rudder movement...1/2 turn spin stayed in for around 5 turns and it took two right feet to stop the spin...recovered just above the tops of stratus.
One of my few near death experiences...
Sadly student died many years later in a Christian eagle that inadvertently spun and didn't come out (whatever the report said).
Entry needs to be at the stall as if too fast it does a neat half flick roll which stops inverted ....
Nicest light aircraft I flew.