Gate some dismantle (4,5)

I believe the answer is:

take apart

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'dismantle' is the definition.
(synonyms)

'gate some' is the wordplay.
'gate' becomes 'take' (I've seen this in another clue).
'some' becomes 'apart' (I can't explain this - if you can you should believe this answer much more).
'take'+'apart'='TAKE APART'

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(Other definitions for take apart that I've seen before include "Pull to pieces" , "Severely criticise" , "roast" , "censure" , "Disassemble" .)

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

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