Crossword Genius

Sculptor losing heart in capital (4)

Ross

I believe the answer is:

caro

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'sculptor' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?

'losing heart in capital' is the wordplay.
'losing' becomes 'car' (I can't explain this - if you can you should give a lot more credence to this answer).
'heart in' says to take the centre.
'capital' becomes 'Lom' (capital of Togo).
The central letter of 'lom' is 'o'.
'car'+'o'='CARO'

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I've seen this clue in The Times.
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