IGNITION BARREL

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HI ALL,KEY WILL NOT TURN IN IGNITION ON MY 1997 1.8 D (WITH KEYPAD)..STEERING LOCK IS ON ASWELL..TRYED LUBRICATION AND TAPING WITH TACK HAMMER BUT NO JOY...UNABLE TO TAKE BARREL OUT AS KEY NEEDS TO BE IN A CERTAIN POSITION SO NIPPLE CAN BE PRESSED IN TO TAKE BARREL OUT..ALREADY TAKEN OFF SCREW..BUT NOT SURE WHAT TO DO..IS IT THE BARREL OR IS IT STEERING LOCK NOT RELEASING..AND HOW DO I GET BARREL OFF..ANY SUGGESTION WOULD BE GREAT...THANKS