Cryptic crossword No 2,869

Across

1. Summat wrong abaht device’s bottom? This should help its movement (8)
2. Bit of money put in a prisoner’s donation box (4,3)
3. Some stuffed ornamental hats (7)
4. Watch today’s top film (5)
5. Washington goes back some (1,3)
6. Birds from South America, heading west (4)
7. Flatten a bit (5)
8. I must regularly delete letters to get data (5)
9. Soft mineral, occasionally sticky, but not initially yellow (4)
10. Scottish projection is out of print (4)
11. He supplies boats with tea on the French Riviera, primarily (8)
12. Liquid down, at a marker ultimately? This determines how far (7,3)
13. …(PS – it’s not quite a former country, but it is a former state) (7)
14. Papers following bizarre ‘ultra sandwiches’ I made into a tradition (10)
15. Airline has this destination… (7)

Down

1. Leaning over the edge, briefly, on top of tower (5)
2. Dry up for Gandhi (6)
3. Evaded hit yet knocked down (8)
4. Bone from top of arm found under hollowed-out lawn (4)
5. Turning ‘X + Y’ into overall income (3,3)
6. Medium, below the empty stage, gets a message (8)
7. Old? Time to retire! (4)
8. Beginner missing Diamonds? (6)
9. Ante up in Adama, Ethiopia (6)
10. Mentally prepare for year in school in P-Peru's capital (6,2)
11. Extremely sensual hot shower (5)
12. Add to church (4)
13. See special instructions (9)
14. Crab, perhaps, without salmon starter? Cheers! (8)
15. Jelly set in bars (4)