The Very Logical Prize Puzle 331

[Matakari]

Thanks for some help for the following, please:

ACROSS:
6, 5 dn. Bare the buttocks and excel? That’s rubbish. (9)
????NS???E
19. Walks like a duck from the junction to give silly talks. (8)
?W???C?N
27. Sort of test that shows North Korea is given one first, ending with disgrace. (3-4)
U??????
30. Fish has endless bird power? It makes no sense! (10)
???S??????

DOWN:
17. Numerical notation system about classic struggle – it’s like a sign to stop. (9)
?O????????

[dannyk13]

6,5dn Moonshine

[Paigntonian]

30 codswallop

[dannyk13]

19,Twaddles

[cashier]

19 twaddles

[fiction-factory]

17d is it 9 or 10 as shown, please?

[Matakari]

Many thanks for the answers! 17(D) is 9 letters as shown, fiction factory.

[fiction-factory]

Thanks. But your pattern shows 10. Is the O in the right place and do have any other letters now please?

[scorpiojo]

17d is ??T?????L

[fiction-factory]

thanks jo. I was wondering if it was another word for nonsense (as teh other answers so far have been) but ic an't immediately see one

[scorpiojo]

17d (A stop sign is) Octagonal

[scorpiojo]

Octal around agon (struggle)

[scorpiojo]

27 I NK blot

[aelmpvw]

17 stop signs are octagonal but that's as far as i can get parsing the clue

[Matakari]

Sorry, fanfiction, about the typo for 17d which should read:
O???????L

[aelmpvw]

crossed posts :-)

[scorpiojo]

22d is belief - be (exist) + anag life

[scorpiojo]

Look up, matakari ^^

[fiction-factory]

Thanks scorpiojo. The patterns were a bit out