My Vauxhall B 20.i 16v 1996 ignition has stuck on 0 and the key will not turn. I have tried picking the tumblers and tapping the key with a mallet, no luck. My question is on removing the barrel should I drill it out or hammer in a screwdriver which I might turn the barrel to position 1 which would allow me to remove it and replace it with a new ignition barrel. Thanks for your advice.....Peter