Yes that one seems to be the most problematic. I just need the answers to these ones:
1. Half a quarter in the US. (6)
5. As a first class return hides sweet chicken. Who’s sixth? (12) (Another Q)
11. Where money is thrown away in mid-aerial manoeuvring? (9) (And another Q)
18. Raise measures (so I hear) to stir up most of the atmosphere after I have left. (7) (Starts with an R)