My barrel and ignition switch are knackered (hopefully the housing is ok) I have searched previous posts on removal of the barrel and seen the few links on removing with a paper clip through hole at back of housing, but I have the early type of housing, the only holes are at the front and appear to have been drilled by PO. Have tryed wire in these 2 holes with no joy. If I need to remove the square cover I cannot do this either. Anyone shed any light please ?