24 down: Extra brimstone mainly built up (4)
So how does this one work?
14 down: Eels’ average speed split count, we hear (10)
Here, I’ve got average speed split count, we hear = par rate split matter, we hear = par ra matta = Parramatta = Eels.
But does matter = count work in legal contexts? As in “on the matter of…” or “on the count of…”? Is that the match?