Cryptic crossword No 3,463

Across

1. Exercise that's taking one's heart out in returning pain? (4)
2. Charisma to a youth lies principally in - you got it! - drip, drip, drip! (9)
3. Regularly done thing, in uniform? (5)
4. No right to mourn heron? (5)
5. Woo! Cold and hot, a real marvel at first glance. (5)
6. Good utopia ultimately owns mistake; evil revolutionary warfare. (9)
7. Roughness after cutting seed that's sticky. (4)
8. Fellows receiving assistance by first of seventy virgins? (7)
9. Super, two and two make a diameter? (5)
10. Dishes sent back after finding South American sauce inside. (7)
11. Fat knight's honour to sit in front of sausage with empty stomach. (5)
12. Achievable epiphany. (7)
13. Stormy clap, so see flashes. (9)
14. Took away shade? (9)
15. Changed a letter a letter being changed being changed. (7)

Down

1. As clouds move swiftly, avoiding storm while sailing. (8)
2. Yellow badger barely losing scalp? (8)
3. Lazing amid wattle, drunk and drained of energy, inspires this Australian anthem? (8,7)
4. Act the fool? Scram. (4,2)
5. So, K?? (6)
6. Plan to speak out. (7)
7. Vote Republican on particular charge! (8)
8. Christ's words, set in stone. (6)
9. Community service hours being distributed across lines. (15)
10. Streets I would see at last along the way? (8)
11. Sour soup produced from chicken's heart blended with broths? (7)
12. On melting, zero Fahrenheit before it could be unthawed? (7)
13. A.I. means, sadly, loss of memory? (7)
14. Shoot your shot with this chap regularly, this setter remains awkward at first. (6)