Cryptic crossword No 3,932

Across

1. Get angry when woman's holding support back (6)
2. Indifferent student kindly bringing in instrument (8)
3. Curtains tend to encircle His Excellency (3,3)
4. Baz, straddling American chopper, returns for test (4)
5. Exposed bosom receiving hint of rouge causes ejaculation (8)
6. Rush shock broadcast (4)
7. Chap and girl heard about church in city (10)
8. Court studies Post Office, getting possible compensation for losers (6,5)
9. Little devil gone walkabout, is accommodated ad hoc (10)
10. Considers measures (6)
11. Call back, nursing a broken leg, to get subsidy in suit (5,3)
12. It's unfortunately crowded, be patient (3,5)
13. At first enigmatic, upon reflection, easily knowing answer - I've got it! (6)

Down

1. Entrance partially opening at eight (4)
2. Face wise man after 6 (6)
3. Draw small boat (6)
4. Precious material trimmed (4)
5. Carried on after George consented (7)
6. Appreciate being accepted by father in France, beginning to establish ancestry. (8)
7. Forgetting a name is awkward (7)
8. Rattled, poacher possibly gets unpleasant (7)
9. Scrutiny for each Yankee gangster (7)
10. Balanced approach an ass might overlook (6,4)
11. Put another way, official recipe gets made badly (8)
12. Snowed under - fed up! (1,3,2,4,5)
13. Danger signal could disturb Jenny, perhaps, if losing head (5,5)