For anyone who's fooling around with left swings, in knee-saving workshops and such... 
Margarine 
becket: from improper, circle RIGHT ;) 3 places
A1. circle R 3, turn to new Neighbor, swing! (standard clockwise swing) 
A2. Long lines forward & (returning) Gents Neighbor roll away along
       Gents RH chain (standard courtesy turn with roles reversed) 
B1. Gents pass R: full hey
B2. Partner gypsy L (or seesaw) 
       swing L (counterclockwise)!!!
Tavi