Wish I knew. I had someone else reinstall my driver side, and it has since popped back out. I had some realligning work done on the door to fix a sealing issue. I think between that, and whatever limits the door travel, and the little piece of metal that holds the spring in, just pushing the limits of the door throw makes it pop out. Probably from pushing on the door when getting in. Everything's just worn out.
I'm anxious to hear as well.