100 octane fuel was in wide spread use during the BoB by RAF FC. The Fw190A could not fly with the outer cannon removed. There was no Fw190A-8s flying with the JGs in 1945. Amiable to the Amiable; Inflexible to the Arrogant 'Cleared/used' by the Allies doesn't have the same meaning as 'cleared/used' by the Germans. The Allies need the n degree of documentation while the Germans only require the minimum of documentation, or speculation.