Cryptic crossword No 3,075

Across

1. Vehicle containing rocket perhaps, and a desktop computer part (11)
2. Something of value, as lost in group (3)
3. Heading west as an organisation pushing frontiers (4)
4. Something 14's final mission was going to study in Perth back alley, with Caledonian taking me (7,5)
5. Be bad back (4)
6. Parent vehicle a highlight (7)
7. Foreign aces rival Cleveland players (9)
8. Curry often seen at court, 7 across out before public hearing starts (5)
9. Check everything, with unusually green passengers on board this 18 down's last mission, including a "8 down in 7 down" (10)
10. Second and fifteenth maybe confuse way of riding (10)
11. After carbohydrate, this relative would get nasty cluster of boils (5)
12. Censured saint is finally free in country (9)
13. Part of 23 model's release price (7)
14. Popular present, possibly piercing (7)
15. 7 across off, but roughly cut short (3)
16. They can help you cook meats and Indian breads with sequence of programs (11)

Down

1. See 7dn
2. See 9ac
3. American method: moving chain (7)
4. Broadcast 19 across (received by a sort of 7 across) before clipping of editor? (9)
5. Seven lying broken by having fair distribution (6)
6. Melted cheese in bed as requested (9)
7. Expert fliers conquering major heights (5)
8. Lady Spencer's bloom, as 14 met with in 1986 (8)
9. This 23 is second rate, getting close but then let loose (5,7)
10. Drink with celebrity influencer (7)
11. Soothing sounds of lies about party you finally accepted when returning (9)
12. Sliding, as arranged? (9)
13. Masses sorry to accept it's an insurance job (8)
14. Eternal Ness led astray (7)
15. Country imprisons union figure (6)
16. Company beginning with simple boat or ship? (5)