11a unusual thing used in not so great delicacy (9)
L _ _ _ _ _ E _ S
I am thinking leftovers, which are a not so great delicacy, but don't know how that fits the wordplay
5d Protection say is put in place after opening of auditorium.
I have A _ _ _ S
The third letter of 5d is also the third letter of 11a.
I am not happy with the S
6d Spike attached tot eh bottom of a large piece of brass. (7)
I have A _ _ _ O _ N
I am not happy with the O
Again the third letter of 6d is the 5th letter of 11a.
The S and the O come from 13a Ballgame is not short of time permitted in series. I have Snooker.