Problem from not moving county’s quarry output (7)

I believe the answer is:
bedsore
'problem from not moving' is the definition.
I can't judge whether this definition defines the answer.
'county's quarry output' is the wordplay.
'county' becomes 'beds' (abbreviation for Bedfordshire).
'quarry output' becomes 'ore' (I can't justify this - if you can you should give a lot more credence to this answer).
'beds'+'ore'='BEDSORE'
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