Cryptic crossword - The Scotsman 30/10/14

Across

1 Have lots of power in advance to reach top speed (4,5,5)

9 Took a long time to hire out a substance used in a chemical test (7)

10 Undertook proposal would gain majority support (7)

11 Try out a chisel; it’s very funny (10)

12 Although in full flow, a diver found a dry river-bed (4)

14 It’s very small, so it won’t take very long (6)

15 Visitor managed to turn out with top musicians (8)

17 Completing stay at secure guest-house, initially (8)

19 Open University got two Poles into a bothy (6)

22 Turn up with two fellows to create an advertisement (4)

23 Nell cried over a popular pantomime character (10)

25 Come across to manage, and is very keen to finish (3,4)

26 Would the Spanish dance around to bear fruit? (7)

27 Freed up a shutter with some leading brushes (7-7)

DOWN

1 Is in favour of the majority share, generally (3,3,4,4)

2 Contact go-between in romance (7)

3 Find a record-player model in convention (10)

4 Bring about some virulent ailments (6)

5 Did a skilled worker design machine to start cutting? (8)

6 Was he content in the role of principal boy? (4)

7 Stir things up endlessly, getting old musical direction (7)

8 Do the directors need to sort out dramas in it? (14)

13 Unsettled soul starting out with tramps and hawkers (10)

16 Would he vote against prize for specific remedy? (8)

18 Was it wrong to head away from the Border? It’s a crime (7)

20 Greek girl left inside, at the end ... (7)

21 ... and heartless girl led on boy, having to be corrected (6)

24 Military group in poor condition lacked force (4)