Cal's Birthday Cryptic Crossword

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Across
  1. 3. Interrogate the weekly tradition (4)
  2. 6. Carefully observe Cal's hobby (5)
  3. 8. Local brew sounds good to group of renters (8)
  4. 10. XXXX Gold loses strength and colour with age (6)
  5. 12. Team learn as they play (7)
  6. 14. Within Grammar, ketamine is a big trade (6)
  7. 15. Cal's heart isn't in the pact to hike (3)
  8. 16. Sarah starts to snoop around beloved establishment (6)
Down
  1. 1. Ring forged in iron at festival (6)
  2. 2. Joe Rogan's crazy views on female partners (5)
  3. 4. At last, folk ensemble can play accapella where Cal's from (5)
  4. 5. Eldest causes havoc on the run (6)
  5. 7. Caught in a cat and mouse game (5)
  6. 9. Fish has low pitch (4)
  7. 11. Cal's skillet has changed a tad (4)
  8. 13. The Scot said secure that big pond! (4)
  9. 14. Family of chimps lose their tails (4)