Cryptic crossword No 1,139

Across

1. Passing shop after light returns (8)
2. Fellow ol' cusinero at last heading to Wisconsin carrying aluminium roll about (6)
3. Scatter on 1 pizza topping (9)
4. Clean rein buckles with back of chamois (5)
5. Show the way without stopping (6)
6. Without enough support to expose, and against having detox withdrawn almost completely (8)
7. Little Elsie hiding fish (4)
8. Drink with Ray and Al? You get the picture (9)
9. Awful university embroiled in "trolley starts to appreciate table's intelligence" controversy (9)
10. Cry about daffodil for example (4)
11. One who works religiously in prison? (8)
12. Kwangju MP erroneously contracted for knitwear (6)
13. Mexican advances zoological techniques examining chimpanzees' heads (5)
14. Under 18 observed having affair (9)
15. Bad seaman's constant speed (6)
16. Snack regularly by hotel following Dad's brother's release (8)

Down

1. Advantageous fast track with new temperature drops (9)
2. Real changes in support of software array (7)
3. Draw small boat (6)
4. Gas on under second helpings of Angel Delight (4)
5. A dark RV crashes next to a digger in Africa (8)
6. Extended wool needle can drag blanket stitch away from the ends (7)
7. Join metal to metal getting pierced by wakizashi - finally that's the way to use a sword (5)
8. Sweet sounds like 'beat' or similar? (9)
9. Most irregular neckwear on holy man sits below back to front shirts (9)
10. Complexity of bra thinly made (9)
11. It's taken for granted as unlawful when politician steps in for a student (8)
12. Dappled appaloosa initially comes back fit along with golden charger (7)
13. Plump teenager taking care of so many (7)
14. Mockery over tops of neoclassical Edwin Lutyens chimney (6)
15. Clinch 150 pa (5)
16. Range Rover's inside middle of venue (4)