Crossword Genius

New rating's hair in excellent condition (5,2,4)

Ross

I believe the answer is:

right as rain

I'm a little stuck... Click here to teach me more about this clue!

'excellent condition' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'new rating's hair' is the wordplay.
'new' is an anagram indicator.
'ratings'+'hair'='ratingshair'
'ratingshair' anagrammed gives 'RIGHT AS RAIN'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for right as rain that I've seen before include "Perfectly fit and well" , "In perfect order!" , "Very fine" , "perfectly in order" .)

I've seen this clue in The Telegraph.
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