There's a known issue where the spring-loaded pin used to lock the weighted arms is bent.

Using this Steadicam Solo stabilizer and monopod is easy. First, attach your camera to the stabilizer. Make sure it's well - balanced. You can then use the monopod to hold the setup steady while shooting. Be aware that the spring - loaded pin to lock the weighted arms is bent. So, when you try to lock the arms, handle it gently to avoid further damage. For maintenance, keep it in a dry place and clean it regularly with a soft cloth. If you notice any other problems, it's best to have it checked by a professional.