Aim to tour Maine? Correct (5)
I believe the answer is:
emend
'correct' is the definition.
(thesaurus)
'aim to tour maine?' is the wordplay.
'aim' becomes 'end' (I've seen this before).
'to tour' is an insertion indicator (to tour can mean to go around).
'maine?' becomes 'me'.
'end' placed around 'me' is 'EMEND'.
(Other definitions for emend that I've seen before include "would appear better" , "make an improvement" , "Correct, revise (text)" , "do editorial work" , "Improve (writing)" .)