Cryptic crossword No 3,420

Across

1. Exploding pit gas overwhelms the redesigned long staple (9)
2. Stop stressing and add more white paint? (7,2)
3. Gnarly, dude - Gulliver's Travels coming to Discovery Channel! (5)
4. Six to ten, roughly, in the morning, making land (7)
5. One's managed no dates in dry patch (4)
6. Livelier band following ZZ Top and Eagles covers (7)
7. Tune device to photograph half-size (7)
8. Inched North Windows for one undead heart lying about (5)
9. Be dealt a flush with spades here, meet a big roller, maybe collect chips? (7,6)
10. Experimental drug for fertility unit (5)
11. Extras from French commercial first with confidentiality contract (7)
12. Reason podcaster's dressed unethically (5)
13. Crack lads leaving gear exposed (4)
14. "Dancer Cancels Finale" articles wanting to create scandal (4)
15. Care taken with sauce recipe one entering into judging process (13)
16. A Cockney Copper Calls, Audible, 50's title (4)

Down

1. Keeping single character's eggs here (5)
2. Pluck Tucker's premier pecker (5)
3. Silly sausages put 5¢ on source of Nile River mostly flowing backwards (7)
4. Boat propeller initially quick, until alligator nibbles tailfin (5)
5. Goddess of Unknowns at end of road (4)
6. Uh-oh, boring ode unfolding in the environs! (13)
7. Seizes half-raised flags (7)
8. Skip party beginning to end (4)
9. Gorgeous, vaguely irrational trousers (9)
10. State archaeologist (7)
11. Directs adding fluoride to unopened tubes (7)
12. Old play pinched by Dune I - it's about errors (13)
13. Lament Of Two Hearts In Holy Rest written up (4)
14. Learner drivers start with these clutches, to catch "English squeeze" (9)
15. Ezra zorbing, holding blade (5)
16. Constructed wordplay back to front (4)