2672: Seamless schemes

The eight unclued lights are of a kind.

Across

1               One slandering and misrepresenting our claimant (11)

7               Purpose of Maoism oddly forgotten (3)

11            Trees concealing old furrow (6)

13            Bitterness of soldier on the radio (7)

15            Signature is tamper-proof, to some extent (5)

17            Sturdy or, conversely, broken? (6)

18            French here about to turn more frosty (5)

20            Tension of female teacher leaving motorway (6)

21            Initially sickened by green gunk (5)

29            Delete article in Irish Gaelic (5)

30            Giving up golf, glass worker becomes less active (6)

34            Paced mostly unforested grassland (6)

36            Camp joke about university lecturer (5)

37            Rattle Kurt Waldheim? (5)

38            I phone hosts about smoothing things out (7)

39            Backing independent expert in Ukrainian city (6)

40            Ultimately they undermine society, I agree (3)

41            Silences cat, terrible pest (5,6)

Down

1               No Liberal, girl redacts naughty magazine’s contents (10)

2               British grass covered by pine bark (8)

4               Inveterate rebel I admire wildly (12)

5               One boring French city finally got visitor (7)

6               Shopkeeper and servant having left for north (8)

8               Second-class loaf (4)

9               Oscar regularly announced Conservative enlightenment  (6)

10            Attack is part of periodic tussle (5)

12            Sycophantic millions following small crowd (6)

14            Serializes a novel about female permissiveness (7-5)

19            Spooner’s married girlfriend perhaps is heavy burden (4,6)

21            Small-time dons scoffing vegetable (9)

23            Wrongly interprets confusion of sad miser (8)

25            At first Eva Braun acts sophisticated (6)

26            Deposits of gold round lakes and Roman road (7)

28            Wolfish occupant of bed, character facing eviction  (6)

31            Checks rules for auditor (5)

33            TV awards upset setter and setter’s son (5)

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