Move to settle up Stormy's suit - that's about right (4,4,6)

I believe the answer is:

stir your stumps

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'move to settle' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'up stormy's suit that's about right' is the wordplay.
'that's about' is an anagram indicator.
'right' becomes 'r' (common abbreviation).
'up'+'stormys'+'suit'='upstormyssuit'
'upstormyssuit' mixed up with 'r' can make 'STIR YOUR STUMPS'.

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I've seen this clue in The Guardian.

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