Happy Birthday!

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Across
  1. 3. Application of gentle merchandise (8)
  2. 7. Impossible to tell the three deranged Electronic draughts apart (9)*
  3. 8. Spill tea on a broken radio but skillful (6)
  4. 10. Smart enough to reconstruct the tap (3)
  5. 11. Roundish fruit when in France sounds like a palindromic ancestor (3)*
  6. 15. Make a joke that is clever at first but then split without breaking (9)
  7. 17. Royalty and their horses suffer from unique mobility disorders (5)**
  8. 19. First, half lick this chewy root. Then finish quid pro. Basmati (9)*
  9. 21. Garden not enough? Assign an almost tall mentor and beat him up (9)
  10. 22. The Right Wing locate destruction, followed by our paint (11)
  11. 24. Household chaotically aim to fly (6)
  12. 25. Plato must repolish junk mixed with the messy Vietnamese soup Nati makes (11)*
  13. 26. A citrus fruit enters a gastropub, lets out a sob, then burns it down (10)*
  14. 27. 500 year old ink spill is lovely (4)
Down
  1. 1. Married to a mangled leg in between a short laugh (5)
  2. 2. The arctic is deranged on adrenalin without an origin country (8,7)
  3. 4. Gabi, if she were assigned male at birth, would sound like a semiconductor device (10)
  4. 5. Zoom in on the TV to some extent (9)
  5. 6. Inventive reactive mix (8)
  6. 9. Alpinist's half-finished cereal contains an arm and a leg (7)
  7. 10. Consultant's eye shield succeeds after Christ (7)
  8. 12. Public relations originally thrusting 100 plus snakes, for example (11)
  9. 13. Listen to the cheerful, merry town where we all go to the dentist (6)*
  10. 14. A close farewell, then a revolution that requires effort uphill (7)
  11. 16. Crooked ham mangled by brand of colour reversal film (10)
  12. 18. Double Uranium combined with dubious shroom forms on hilarious sounding tubercle on armpit (8)
  13. 20. One Roman gentleman hides a mashed lentil cleverly (11)
  14. 23. Viki's favourite model brand hoists a lever learning to drive (6)