2606: In a twinkling

The unclued lights are of a kind and may be easy to see. A diacritical mark should be ignored in each of two clued solutions.

Across

1    Ungenerous-sounding notice gets woman in frenzy (6)

7    Birthday back in one Scottish home (5)

13    A sign to remove singer (5)

17    Parent welcoming one of her parents some time (6)

20    Transmit most of short story about French aristocrat (7)

21    Scoop line through mound (6)

24    Teacher with itch and rash (8)

26    Around end of year old man feared being obsolete (4)

27    Goalies regularly get a cheer (3)

28    Throw pipe down on side of tray (3)

29    Glider lands wife in hospital (4)

34    A whole theory is carved into oak (6)

36    Long passages from singular belief systems (7)

38    New car tax has one by the throat (6)

41    Protecting fabulous finish (9)

42    Newly equip official with modern technology (5)

43    Exploits good food being spoiled, nothing foreseeable (4,2,3)

45    French city is almost wrecked (2,4)

Across

1    Disable top of missile on purpose (4)

2    Animals in afternoon around in range (7)

3    Somewhat sedentary in garden (4)

4    Stop wearing a ring? (7)

5    Old coins from Greece chosen specially (8)

6    School just occasionally offers full range (5)

8    I party on return to island (4)

9    Useless people, on stage in calamitous musical? (4,4)

10    Get clean eastern stringed instrument (5)

14    Fat cats in trouble? Good! (9)

18    Pass daughter the best ointment (4,5)

19    Solid things Horace said (in translation) (10)

23    Back at sea with new guns (7)

25    Religious reformer Richard plunged into river (8)

26    Accompaniments from the foreign inadequate soprano (8)

30    Clown at jetty is rubbish (7)

31    Moulding originally from America, part unfinished (7)

35    Calamity in field, river rising in curves (5)

37    Stake decapitated poet (4)

40    Awaiting action? Bother! (2-2)

Download a printable version here.