I'm having the exact same problem, also only on the driver's door, worse in cold weather. In researching it, I can not find any adjustments at the latch or pin.
EDIT: I stated that the pin is not adjustable. As T.J. points out below, that is not correct; there is a small amount of adjustment available. Mine was stuck.
I am planning to try what your guys did, adjusting at the hinge. If that doesn't work, I'll try to see if I can increase the tension of the spring that overcenters the latch pawl.
Last night the alarm went off when the door popped open while sitting in the driveway.
In theory, there is no difference between Theory and Practice. In practice, there is. - Y. Berra
Last edited by luxige; 12-17-2010 at 10:12 AM.