Cryptic crossword No 2,939

Across

1. Governor of many here has dance guarded by two measures (8,6)
2. Walk round US 14 or 6, say (6)
3. Complain about flan spoilt in shower (8)
4. Some website chief? Probably (6)
5. Place of safety as truancy erupts (9)
6. Regularly agreeing a place for sports events (5)
7. Wells for one returned analytical sample (4)
8. Accidentally sewed in with last bit at the front (7)
9. Crackpot's racket next to German club (7)
10. Hear wind instrument in study (4)
11. Best and worst (5)
12. Rolling Stones may call Bolton home (9)
13. Limitless adaptation of legendary knitting pattern (6)
14. Customer in Guernsey stuffing cake (8)
15. Fail to apply for revolutionary online terminal (6)
16. Line on chart is different after initial modification (8)

Down

1. Woody region in favour of superlative marker (6)
2. Nothing in maths and French that begins to bring one up to speed (6)
3. Suit advice from simplistic trainer? (5)
4. Quiet infant doesn't start to drop off with this? On the contrary. (7)
5. Old princess, single, goes missing from Egyptian 14 (9)
6. See 1 Across
7. Helper regularly going into top room is good at sport (8)
8. Raised the Spanish girl on about nine abandoned bases (8)
9. Music maker who can't be trusted in discussion (4)
10. Stoic characters leaving microbiologist unexpectedly cause confusion (9)
11. Defender discovered Lady Avon scam before the case (8)
12. Where to find trapdoors serially? (2,6)
13. Nowt moves in Fleetwood, for example (4)
14. King winds up park officers (7)
15. Respect side said to have two points over (6)
16. Be leader no more? (5)