Cass & Taryn's Cryptic Crossword No. 2

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Across
  1. 3. wax Buy it in Rio, but it’s not for surfing. (9,3)
  2. 5. and cheese Cheech and Chong are similar at first, then polar opposites. (5,3,6)
  3. 6. ring A smelly engagement (6,4)
  4. 7. I can’t stand running competitions. (6)
  5. 8. is special A paradox about equality and uniqueness. (8,2,7)
  6. 9. Era when pigs fly. (6)
  7. 10. It’s brown and round and underground. (4)
  8. 11. A negative deduction creates a massive blaze. (7)
  9. 14. ego This priest is sometimes arrogant. (5,3)
  10. 17. Went deep to find a bird. (4)
  11. 18. Royalty touches down in a good state. (10)
  12. 20. Cabs crash then cover up the accident. (4)
  13. 21. Two dog feet make a nice ointment (6)
  14. 22. Even going backwards you get high. (3)
  15. 23. Spreading rumours despite being a well-mannered bird. (10)
  16. 24. Don’t be so lar-dee-dah about renewables. (5)
  17. 27. A messy Argentinian (10)
  18. 28. Snake skin found in an outdoor building. (4)
Down
  1. 1. Fruits that stay on the ground. (5)
  2. 2. Comfortably and surreptitiously walks past (8)
  3. 4. A good cough gets things done. (10)
  4. 7. Striking instruments again will have consequences. (13)
  5. 12. juice Get ready to stop before a sweet drink. (6,5)
  6. 13. toes Cate’s mole creates terrible fashion errors. (5,4)
  7. 15. Two ladies flavour the roast. (8)
  8. 16. It looks funny but is actually a form of homicide. (12)
  9. 19. serial killer Who murdered the muesli? (1,6,6)
  10. 20. A fabulous way to save for retirement. (5)
  11. 24. marks Kids get upset about school results then leave a mess. (4, 5)
  12. 25. A succulent ending. (6)
  13. 26. Can make a big splash in a small room. (3)