The Very Logical Prize Puzzle # 345

[Matakari]

Stuck on the last four which must be quite archaic. Answers with parsing if possible would be appreciated. Thanks!
DOWN:
4. Played like Donegan when light rain is over Germany. (8) : ?K?F?L?D
17. Thin, achy and upset? A flower is needed. (8): ??A?A?T?
18. Wearing a close-fitting garment with the central casing removed and settled inside. (8) :
??R?F?E?
19. It illuminates the South in Georgia and Louisiana at melting-point. (3,4): ?A?/I?M?

[Mamyalynne]

4 Skiffled (Lonnie Donegan)

[bookbinder]

4 skiffled, but I can't find a link with Germany.

[Mamyalynne]

Skiffle + D

(ˈskɪfəl) n. (Physical Geography) dialect Ulster a drizzle: a skiffle of rain. [from Scottish skiff, from skiff to move lightly, probably changed from skift, from Old Norse skipta shift]

[bookbinder]

19 gas lamp
abbreviations for Georgia and Louisiana: GA LA
the South = S
at melting point = mp

[Neveracrossword]

17 Hyacinth, anagram.

[chelle7272]

19 Gas lamp

[Mamyalynne]

18 Cor set ed

[Matakari]

Thanks, all, for the precious help!

[Neveracrossword]

Glad we could help, Matakari. I think you led yourself astray, thinking the answers were going to be archaic!

[Matakari]

Yes, I was a bit rash in thinking the answers were archaic. I have to be more patient. I should have got the anagram for 17!