Judge contributes to inadequate rule change (5)
I believe the answer is:
rejig
'inadequate rule change' is the definition.
The definition and answer can be both to do with ownership as well as being verbs in their base form.
Maybe you can see a link between them that I don't see?
'judge contributes to' is the wordplay.
'judge' becomes 'J' (abbreviation for judge).
'contributes' indicates putting letters inside.
'to' becomes 'reig' (I can't explain this - if you can you should give a lot more credence to this answer).
'j' placed inside 'reig' is 'REJIG'.
Can you help me to learn more?
(Other definitions for rejig that I've seen before include "Arrange anew" , "Arrange in new way" , "Re-equip for new kind of work" , "Equip again" , "Rearrange (something)" .)