Cryptic crossword No 3,834

Across

1. African youth pukes initially during eating disorder (8)
2. Held back by D or M in variation IX (6)
3. Runs into wood to die laughing? (6)
4. Showing off young man before party in a very hot place (11)
5. The language of four ducklings (4)
6. Classy woman (possibly a naked one?) loses a 22 (2,4,4)
7. The last character in the revolving point above your head (6)
8. Exhibit pig in hospital? On the contrary! (4)
9. At university graduate with skill can be improved (10)
10. Seed is one of five ending with no ace (6)
11. Block or retrospectively curtail "to curtsy and bow" (8)
12. Hanging equipment is a problem for Cockney firefighters (6)
13. Former crossings of Zulu and eastern supporters (6)

Down

1. Englishman found in toilet having sealed instructions from the Pope (4,4)
2. You will only get this this if you have seen it before (4,2)
3. This country was not originally in the middle of Barbados (8)
4. Aluminium, wood or a plant (6)
5. What follows X-ray? Going back I'm scared, arriving at first in New York (6)
6. South Africa owns area of Greek city (6)
7. Language class taking beginners only knowing Yiddish, Romanian, Greek, Yoruba and Zapotec (6)
8. Very large and wet, not married, nobody plays with me (7)
9. Is superior to former prison accommodation, but there's only one left (6)
10. Noted womaniser finds new love with dog, in vain sadly (3,8)
11. March 10 is first of the so-called May 19 Coalition? (8)
12. This wool is for country singer only (8)
13. investigation of short and unstable equine railway (7)