I've used this about 5 times on set and it has worked well. But today the ball bearing just came loose (while the arm was locked and tightened during the interview) and it won't go back in. In addition, there is now a screw with an external thread on my Icahn that has a ball bearing. Monitor.WTH! I had to cut the interview short completely because even though I had a spare screw I couldn't get it in as the SmallRig screw is now locked into my IKan!