Saga Cryptic Crossword

[Donnart]

This is the first time I have tried this crossword and have managed to solve quite a few myself but others I have found on this site. I am still stuck on three clues so if anyone can help it will be much appreciated.

3 Court trouble because seen in a bit of satire (3,3,2) ??? F?R ?T
I presume it is "for it" but cannot get the first word

4 Steamroller dismantled, metal bits thrown into dock (6) ??R?E?

13 ..funny story about Libertine's end - one found in bed (6) O?S?E?
Could be oyster but not sure how that fits in

[Toorak]

Ask for it

[JJ109]

3 Ask for it
for(because) in "A skit" (satire)

[Toorak]

13 oyster - anagram of story around (libertine)e

[pixie374]

13 anagram of story around e (end of libertine)

[margarettom]

4. Sorrel
Another name for dock - anagram steamroller without metals

[JJ109]

4 Sorrel
steamroller minus metal then anagram

[dannyk13]

4,Sorrel - anagram of steamroller minus metal
13. Oyster - (libertin)e inside anagram of story;

[Donnart]

Thanks everyone, once again I am indebted to you. would never have worked them out for myself.

[Toorak]

Sorrel - anagram of steamroller minus metal