Cryptic crossword No 3,414

Across

1. Come Sam! (5)
2. Cycling jerseys. (4)
3. See 1d
4. Waiter at the entrance to give out sandwiches in shift (6)
5. In principle, students understood concepts clearly if notes covered topics without unnecessary wording (8)
6. At first, Taylor Swift cut short Eras Tour - originally the end of her, after travelling on Monday to exotic island (10)
7. Small dog or maybe cats returning home (8)
8. Shoots missiles (5)
9. Go and change - Boring, Idle and Selfish? (10)
10. Unfortunately no cigar yielded - naturally (7)
11. Horny individual in basement beginning to look relaxed when having sex (7)
12. Only a small number of geniuses eventually understand this clue! (6)
13. Is king returning to the Promised Land? (6)
14. Don - Capone - loses head after most of the bust-up (5,2)
15. Only if I read out warrant (7)
16. Company with popular name (4)

Down

1. Send in booze, mate! (7)
2. Brother's quaint straw farmhouse initially makes up for lack of yard (3,6)
3. It turns up and down! (7)
4. I will no longer make out with outlaw (5)
5. Girl is primarily on unknown drug (5)
6. Lead role tending to be in third person (7)
7. Hunting for one at heart, admitting it about accompanying after, at the onset entering ascendant doctor around - a little inaccurately! (9)
8. Old case of crossword riddled with herrings, leaving one with an interesting thematic idea (11)
9. No exercise! (5)
10. Where to go with a broken tyre and voice? (9)
11. Charges a hefty fee for the audience (7)
12. Poetry is often described with disdain (9)
13. Stopped harvest, choosing extreme conditions ultimately (to begin with, say) with England depleted (9)