Across
Device that examines and controls croupier’s odds (8)
I haven't cracked this one yet — but Fifteensquared have:
Alternate letters (‘odds’?) of ‘c O n T r O l S C r O u P i E r’.
Leaving the Guardian to follow old backwards party (6)
Top came off (4)
Moving crazy shit (10)
Snag this Latin prize (6)
My French later turned out to be useful here (8)
Native Americans sent back soldier to get sauna treatment … (7)
… one that doesn’t cure hygiene problem on set (7)
See 22 Down
Sway in to find guard (6)
I haven't cracked this one yet — but Fifteensquared have:
‘Sway in’ must be split into S plus ENTRY (-‘way in’).
Sky shows song by Mercury? (10)
24d
Hogwash in barrel, although emptied twice (4,4)
Fix couple one more time (6)
Say Arab has a sense of self-importance (8)
Down
21d
Present leg (8,6)
‘Man or Dogs’ passage read out (4)
Serving idiot regularly upset ballot (6)
Appreciated little protection for Malcolm, orphaned and left out (7)
Change tramline’s last stop (8)
I haven't cracked this one yet — but Fifteensquared have:
An anagram (‘change’) of ‘tramline’.
American celebrity into abusing cocaine briefly (5,5)
18d
As a rule, a biro or otherwise can show a spectacular vision (6,8)
Wine and champagne to start erection? No! (10)
I haven't cracked this one yet — but Fifteensquared have:
A charade of C (‘ C hampagne to start’) plus HARD ON (‘erection’) plus NAY (‘no’).
Perhaps true lady is being untrue (8)
See 7
Politician marking time? Changing leaders would be smarter (7)
See 1
20a
How to fob us off about a couple of advertisements causing little suspicion (6,2,1.5) (6)
See 24 Across
Type letters or click words in the clue