Dear LP.
Hmmm... i don´t own one but i think i can answer it.
;-)
Choose the "SPORT" Position to cut the sharp movement moments of the rotor and the watch is still winding.
In the "EXTREME" Position the rotor stop completly and in "Free" Position the rotor is moving freely.
This is how i understand it!
Hope that helps!
Greetz!
ARS
Bodymodification-Artist
www.stigmata-inc.de