From: Fyrth Crosse - firstname.lastname@example.org
Remote Name: 18.104.22.168
Are you sure the ignition is not advanced too far? If the engine sounds 'hard and metallic' it might well be. Try retarding the ignition by loosening the pinch bolt on the distributor and moving slightly in reverse of the rotor arm rotation direction. Also, have you got a blocked carb.jet?
The Austin Seven Motoring Pages