I think the spelling of the word 'Carburetor' should be 'Carburettor'.
Carburetor = American spelling
Carburettor = UK spelling
And as this sim is about the Battle of Britain...
http://en.wikipedia.org/wiki/Carburetor
EDIT: another spelling thingie
'Toggle Horizontal Stablizier' should be 'Toggle Horizontal Stabilizer' or (again English spelling) 'Stabiliser'
and
'Assigment List' should be 'Assignment List'
'Propellor Pitch' should be 'Propeller Pitch'