Hi there,

I also had to resort to the drilling trick on my wife's '74 280C - the vacuum portion of the lock failed and stuck in the wrong position. Since the hole is under the license plate, it won't show at all, and I just filled it with some silicon sealer. With my wife's car, there were two keys, one that operated the ignition, doors and the trunk, and another that only operates the ignition and doors. Perhaps you have the same scenario? Just a thought...
Richard Wooldridge
'82 300D/4.3LV6
'74 280C
'77 280Z
'77 Jag XJ6L