Complete
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7 9 13 16 5 18 1 10 2 8 15 14 3 12 11 4 17 6
  1. 5 a Heavy metal fan's performance? (11)
  2. 7 a Ask God? (4)
  3. 8 a Archaic (8)
  4. 9 a Besotted (7)
  5. 11 a Stockpile (5)
  6. 13 a Spoonful — exclusive story (5)
  7. 14 a Notion (7)
  8. 16 a Fire lighter (8)
  9. 17 a Low dam across a river to raise its level upstream (4)
  10. 18 a Remedy guaranteed to cure (5,6)
  11. 1 d Suspicious (4)
  12. 2 d Stomach (7)
  13. 3 d Oneness (5)
  14. 4 d Mammoth (8)
  15. 5 d Cheerfully irresponsible (5-6)
  16. 6 d Make-up for actors (11)
  17. 10 d Rigorous (8)
  18. 12 d Line on a map connecting points of equal elevation (7)
  19. 15 d Letter that's regularly dropped! (5)
  20. 17 d Wild carnivore (4)

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