4 D Piece of hair one delicately flattened (6) i?o?e?
13 D Dawdler to help American girl up (7) l?g?a?d
16 D Switch her and set (6) ?a?d?n
18 D Odd sniper near Italan city (5) s?e?a
19 D American heads of unions require power to take off (5) u???p
20 D Chief on a bender? (4) ???h