Looking for door lock springs

There's a problem with my passenger door latch, which I traced back to some missing springs in the lock mechanism. Here is a picture of the latch from the driver side where you can see the springs (there are two). They are attached to the arm which goes to the door lock button. These springs keep the door lock arm in position -- when the arm is up (unlocked), the springs keep it up and when the arm is down (locked) the springs keep the arm down. Because the springs are missing on the passenger side, the lock arm falls down due to gravity when the door closes. Basically, the door automatically locks when the door closes.

Any idea where I can get some new springs for this? The parts diagram for the doors does not show individual parts of the lock mechanism.
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