My '85 S123 has a single worn key that works in the ignition. The lock leaves are worn and won't turn for a replacement key cut to original specs. Tonight my drivers door lock wouldn't turn with the key.

I'd like to repair the ignition and door locks with new lock leaves, but they are unavailable. My local locksmiths don't have them either.

What can I do before my ignition lock fails and leaves me stranded?