On first use I was unable to tighten the clip enough to prevent the clip from moving around the small top post. I soon realized that the pin itself was spinning in the small hole it was placed in. I could pull it out by hand. A bit of red locktite solved the problem, but it begs the question as to why the bars aren't better secured before they reach the customer. You can even put a few drops of solder at the bottom of the hole and it's a less reliable solution if you don't want to glue it effectively.