Mix-ups

All clues have their correct definitional parts, but the subsidiary parts have been mixed up with some other clue for an equal length word.

Across:
8. Danger in a Roman road with magical powers, we hear (8)
9. Siezes girl in the end (6)
10. Neither are muddled (3)
11. Seaman has damaged goods: note lascivious entertainment (8)
12. Artist with sexpot followed (6)
13. Rub round actuaries the wrong way in gravity: it's a great honour (15)
15. Reddish yacht in bad condition (7)
18. Decorative work for vehicle. Try nothing anyhow (7)
21. Children below school age hold up bad rite or boats (15)
24. Bind to copper in badly-formed chip (6)
25. Runs off to dispose of ball (8)
26. A happening, but not National Trust climbing shrub (3)
27. A non-drinker with a church hiatus (6)
28. Chronicler Jack finds headless panther at the Y (8)

Down:
1. Arctic hunter makes dreadful spouse (6)
2. Musical works for hasty resale (6)
3. Deterrer snaking out for ownerships (15)
4. Father pays to have one girl (7)
5. Heaping on the red-tape softly and slyly reissues ingots (15)
6. Below Mach 1 and badly in a slant (8)
7. Conciliator takes bus back with odd coins (8)
14. Four yen for seed head (3)
16. Perhaps Amy Johnson left shop in a mess (8)
17. Short application a seer can give deliverance (8)
19. A short evening snore, but not in south-east (3)
20. Damaged car tyre for pawpaws (7)
22. Simpleton lending money endlessly has postscript (6)
23. Northern lots with no southern vegetable (6)