Had a similar problem many years ago on my 71. Mine started from the outside on the drivers side. Went to open the door and no release from the handle. Solved the problem by buying a spring(?) from Zip and installing it under the handle. Solved the problem and to this day it still works. Don't know if Zip still sells this, but you can check on their web site. Have a good Holiday.
Gene
Jim, if I recall correctly,the spring cut the devil out of my thumb.