1: Chain some; cuff objectors (3)
4: Metallic element forming excellent electrical connection (4,5)
9: Tweak with wrong end of a pin (3)
10: Risk of pole womans end being upset after handy beer (11)
11: I hear mantas and surface (5)
12: Hordes of unions' speakers (5)
13: However, you expect trouble at first (3)
14: Brand of cat food containing bird's head and feet (5)
15: In hindsight, schedule recorded for a blast (9)
17: Sailors with thin skins are cinematic celebrities (4 5)
21: Tuck's in a bad way, unable to move. (5)
22: Fish spawn upstream in little orifices (3)
24: Almost all I have is lousy (5)
25: Call unexpectedly, find Dad at home! (3,2)
26: Check strong drink of 22-acrosss bold alter ego (5,6)
27: Clean oneself, but in reverse (3)
29: Stateside bananas: most like a rock (9)
30: Man, what an avant-garde US artist! (3)