Thanks Al I 'll look into that tommorow .
You reminded me of something funny ..A couple of years back I went to help out a backpacker whos van wouldn't start ..I took down a tractor and chain ..and hooked the chain up to the front of his car ..during some chatter I had a hunch it was just his ignition barrel was worn ..so before doing anything with the chain just lying on the ground went and gave the key a wobble as I turned it ..and it started straight away ..he was exstatic but kept looking at the chain on the ground ..eventually he said
"I don't understand could you pleases tell me how chain make my car start ".?
I really thought about saying its a magic chain ..but relented and managed to convince him he needed a new ingnition lock