4 Across, For a few in Australia these are paired in cells (9)
9 Across, 2 from America in short supply (7)
10 Across, 2 inch cog that's come loose (7)
11 Across, 2 single races:what opportunities to make a comeback (9)
[2 Down, Basis for serving in Dad's Army? (5)] Unsure if this clue helps?
Compiler - ANAX
Many Thanks