Finaly got my ignition barrel out after another 4 and half hours. THE hole i was refering to is right around the back of the barrel casing which you can not see or feel, you have to make a tool up using a coat hanger bending it in the shape of a question mark? and then go fishing for the hole. A very stressfull job indeed. once located push in to release a spring and then push out the barrel. Easy NOT but got there in the end.