How can you justify keeping an airfield open for 9 aircraft? Logic would dictate that you either need to move more aircraft in from elsewhere (start a "Reds to Kinloss" rumour anyone?) and close where those aircraft came from, or close Kinloss itself.....
The one showstopper is that closing an airfield is costly in the short term, costs are only re-couped over 5+ years. So if you are actually trying to save money then closing bases sometimes isn't really an option!