Herald Cryptic

[creamegg]

9a amusing lad playing medley
s???a???d?

11d less clever subtracting 500, however headteacher wanted addition
?f?????o?g??

7d on hill one's staying upright 3-7
???-?b?????

8d sterilise jar, spare, and use it
????e?????

19a yes, tokens are exchanged, they're vital for supporters
??y??????

14d small pie less filling, without calorie counter, one takes risk
?????l????

[bookbinder]

19a keystones

[Toorak]

9 salmagundi - anagram of amusing lad

[Mamyalynne]

7 Law abiding

[Toorak]

14 speculator

[Mamyalynne]

11 Afterthought

[Toorak]

8 pasteurise

Anagram of spare use it

[creamegg]

thanks everyone, any idea on these?

6a firm about to employ first class hand
?l?p

10a has pained expression and odd nose
?w?s

2d run and hide or attack
p?l?

16d york miles away, annoyingly
??k?o?e??

24a compose missing overture for ceremony
r?t?

26a go over to pack uniform and tent
y?r?

22d jenny perhaps with mike in crowd
?a??

23d drive from anstruther depart early
?e??

[Mamyalynne]

6 Clap

2 Pelt

[bookbinder]

6a seen as clap

[Mamyalynne]

22 M ass

[Mamyalynne]

10 Owns

N in Ows

[bookbinder]

24a rite

[Toorak]

2d pelt - triple definition
6a clap - plc reversed around a (first class)
16d irksomely
26a yurt try (go) reversed round u

[Toorak]

23d herd - in clue

[elliemay1]

16 irksomely, anag

[creamegg]

thanks x