ok, so you put it on wrong and then blamed the stem for not working correctly?

the instructions say to put it so the logo is facing up. if you didn't get that part right, I'm guessing you probably didn't grease the wedges, nut and bolt. if you did use grease, I'm guessing you probably got grease on the bars too.

I run this stem, my friend runs this stem as well as many pros that don't get paid to run it. it works great if set up correctly.