Comparatively uneven EP? Sort it out! (8)
I believe the answer is:
spottier
'comparatively uneven' is the definition.
('spotty' can be a synonym of 'uneven')
'ep? sort it out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'ep'+'sort'+'it'='epsortit'
'epsortit' is an anagram of 'SPOTTIER'.
(Other definitions for spottier that I've seen before include "Comparatively uneven" , "more foxed" .)