Settle up gear one wore (5,4)

I believe the answer is:

agree upon

'settle' is the definition.
(I've seen this in another clue)

'up gear one wore' is the wordplay.
'wore' indicates an anagram (I've seen 'worn' mean this (worn can mean damaged)).
'up'+'gear'+'one'='upgearone'
'upgearone' with letters rearranged gives 'AGREE UPON'.

I've seen this clue in the Sydney Morning Herald.

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