The Spectator 1904

[Matakari]

Just some hints for the following, please! I think I have them, but am doubtful...
ACROSS:
12 Fuel from Dunkeld incinerator(5): EL?I?
17 Sports venu's new dates(5) : T??? ( STADE?)
22 More than one type of guides(8): ?OUR???? (TOURISTS?)
23 Tablet's place fixed in course(7) ?O??TT?
37 Stops en route reviewing some of the interior of Deal Castle ( 7, 2 words): ?A??S??
DOWN
5 Red holding ace and jokers - 78 in total ( 10, 2 words):
?A?O????D?
9 Green Cross Code operated by street-digger?(9, 2 words):R?A???I?? (ROAD?????)
30Mineral obtained from wood in centre of Oslo(6):
?P??E?

Thanks for the hints to these...

[johnalex]

12a Answer hidden in the clue

[johnalex]

17a Yes, dates anagram

[wallacia]

centre of oslo is SL,think of a type of wood found inside SL.

[Orbilius]

12 it's hidden
17 you're right
22 think about "type"
5 no of items

why is "toners" right for Hills' hair...?

[BlueIce]

5. Think Communist around A, and where you would find jokers
9. Think tool for the second word

[BlueIce]

23. Think stone
37. Anagram within Deal Castle

[Matakari]

Thanks for all the help!

[Quizmonkey]

You've now asked for the majority of the answers in this puzzle. Why do you try to do a crossword which is obviously beyond you?