Weekend Australian, Sunday Times 618

Not much to say this week except to point out the shocking frequency of the double def. Two max is the norm for the (real) Times. Couple of obscure bits of Oz fauna in their Indigenous forms. Load of foetid dingo's kidneys at 14 down.

Across
1. BEST. Drop "He" from "behest" (command).
3. ASBESTOSIS. Shabby attempt at a cryptic definition.
10. GEOLOGIST. Anagram of "gigolo set".
11. BLADE. Attempted double def. A blade may be a cutter but it is not grass as such.
12. ISLAY. "I'm a killer" = I slay.
13. UNAWARES. The girl is Una and she has wares (things to sell).
15. PUNKARI. Yaralde word for the White-eyed duck or Hardhead (Aythya australis). "Turning up" = PU + anagram of "a rink".
17. TALLY-HO. Dot missed out on the fag papers here. Another double def.; this time obscure. It's the name of a coach also called a four-in-hand. A four-in-hand also happens to be a way of tying your tie.
19. RESTYLE. "Drop" = REST; which is kinda loose -- I suppose as in a player being dropped from a team. Was Ponting dropped or rested? There's a difference. "Your leading" = Y. "Left half off" = LE.
21. COWBELL. Not very good really. We get BELL from "Ringer" and attach it to an animal (COW).
22. SALIVATE. Anagram of "a live Tas" and the anagind is "badger"?? To salivate is not to drool over. Cf "I salivated Carla's cleavage".
24. ROGUE. Barely disguised anagram of "Rouge".
27. WAGES. Another dubious cryptic def.
28. IMPENDING. Anagram of "impinged" and N ("north").
29. RACKETEERS. "Awful noise" (RACKET) + a thing that sounds like "ears" (EERS). Criminal!
30. PEAR. I suppose this is the answer as there's such a thing as a conference pear; but it just doesn't make good sense.

Down
1. BIG DIPPERS. Another double def-ish thing.
2. SHOAL. Yet another one.
4. STIMULI. Anagram of "I must" and "li" (half a lira). Are stimuli incentives?
5. EXTRACT. Double def. Zzzzzzz.
6. TIBIA. Reverse "excellent" (AI) and "fragment" (BIT). The "of" is superfluous.
7. SPARE TYRE. Dreaded WPOS in yet another attempted double def.
8. SUEZ. "Greek celebrity" = ZEUS ??
9. POLYGAMY. Don't get this one at all. How can you get this out of "my game go"? Please explain Dorothy.
[[Edit: now explained by Hawkeye. It should have been "my play go" -- another artifact of the unedited idiot setter. How dare they publish this as a prize puzzle?]]
14. NOOLBENGER. Nyoongah word for the Honey possum (Tarsipes rostrata); anagram of "Longer bone".
16. NOSTALGIC. "Gnikrah" = "harking" back(wards). Can we use "harking back" as an adjective? Is Dot trying to get us to write in "nostalgia"?
18. LOWERING. Double def. Jeez am I getting fed up with these.
21. EVASIVE. "I've" goes after EVAS ("save" reversed, "up"). The lit/def here is "working shifts". Bollocks!
23. ISSUE. Not another one?
25. GUIDE. Homophone clue: sounds like "guyed".
26. EWER. Decapitate "fewer".