This is a fairly common problem on the 60-63"s. They often get
all gummed up in the mechanism & won't release. With the door panel off,
you'll see that there is an adjustment on the linkage arm. While you have
the panel off, spray WD-40 or simillar in the locking mechanism & move the
linage to loosen things up. Adjust the inside handle arm & this should solve
the problem. Don't get too rough with the inside door handle, as these have a
tendancy to snap off at the top.
John
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