cryptic 2494

[creamegg]

7d- finished on poor horse last in race - past its best
overripe seems to be the answer, but where does the horse part come in?

1d- positions on course airline set up, making rapid descent
a?s?i?

14d- involved in running, a miler somehow concealing a worry
?a?a?e?i??

27a- closely follow error by group of students
?????t????

23d- a piece knocked off counter
?h?? - chip?

24a- fail to stop thug
g?o?

[ulysses100]

7d finished = over
rip = an inferior horse
e = last letter in race

[ulysses100]

1d AB seil >>
24a go on

[Lie-in King]

7d Overripe - Over + rip (inferior, poor horse) + (rac)e
1d Abseil - (up) lies + BA
14d Managerial - anag 'a miler' (concealing) 'a nag'
27a Slip stream
23d Yes, 'Chip' - as a casino counter
24a Go on

[Aquagility]

1d Abseil

[creamegg]

your lifesavers , i would have gone mad trying to work them out.