Speak two sorts of imperfection (4,4)
I believe the answer is:
weak spot
'imperfection' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'speak two sorts' is the wordplay.
'sorts' is an anagram indicator (I've seen 'sort' mean this).
'speak'+'two'='speaktwo'
'speaktwo' anagrammed gives 'WEAK SPOT'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for weak spot that I've seen before include "Point of vulnerability" , "Area of deficient knowledge" , "Achilles heel?" , "Gap in knowledge" , "'Your area of vulnerability (4,4)'" .)