Gus' Wedding Cryptic

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Across
  1. 6. Frustration that the whole country has to burn for all eternity (9)
  2. 8. We need to ask the nymphos why they chose this musical arrangement (8)
  3. 12. A hard line of phosphorus will get you in the mix with the ladies (9)
  4. 15. I've invented a new way to get my bed tidy (4-2)
  5. 16. Changing the tyre wore you out but the next part will be even more work (7)
  6. 18. Josephine's man can only get a semi-on (9)
  7. 19. For a warm-up, regular, high-intensity, youthful, tempoed hip movements (6)
  8. 20. Getting incarcerated wasn't exactly my goal (4)
  9. 21. Danger at the viewpoint!
  10. 22. The sound as a man leaves quietly (7)
Down
  1. 1. I've explained to the new boy how to use the touchpoint stove (9)
  2. 2. The end-to-end try contained in it three divine passes (7)
  3. 3. Sounds like more hard work than being a Spanish tennis player (6,6)
  4. 4. Docking ships don't lie (4)
  5. 5. That booze sack needs to sleep less and get down to the library to reform himself (8)
  6. 7. I hear that your mate from Prague is paying (6)
  7. 9. Change of: mass/acidity?
  8. 10. The period of scarcity didn't last long (8)
  9. 11. One should think formally on the importance of being Bert's brother (6)
  10. 13. Doesn't matter which side you start from to get to this height (5)
  11. 14. I'll ask her which state she's reporting from (6)
  12. 17. The man rushing sideways through the airport turnstile is definitely going to South East Asia (7)
  13. 18. The piebald horse is so confused that it's not using its front legs (7)