The locking mechanism is pre adjusted at our factory, but we’re not perfect. Also, it’s possible that over an extended period of time a slight adjustment may be necessary. If so, push the lever all the way forward to the “open position” and use a screwdriver to ever-so-slightly turn the screw in the counterclockwise direction (screw is reverse-threaded). For instance, when looking at a clock face with 60 seconds you would rotate the screw head 3-5 seconds, then test it. When correctly adjusted, the inner pole should move freely when the lever is in the “open position”, but not when the lever is in the “locked position”.