I had the car up in the air and I wanted to raise the front another few inches. So i centered the jack underneath the engine and started to jack it up.. I raised both jack stands to the proper height and when i started to ease the car down the jack stand on the passenger front side gave in and the car started to fall to the right but i caught the car with the Jack..
The jack stand was a craftsman and i didntsee anything wrong with it.. I guess when i brought it up to the right height the locking mechanism didnt click in all the way.

But regardless I always have 3 supports when possible whenever im working on the car.. that just reminded me why.