Sometimes I really hate office furniture Cheap Herman Miller cubical farm in a sales office The horse shoe clip worked loose causing the entire cylinder to rotate resulting in a lockout of both drawers Finagled it enough to unlock top drawer and removed drawer to gain access to lock and linkage Bottom drawer wouldn t unlock I found the problem Removed lock and reinstalled it correctly Both drawers lock and unlock perfectly now It s definitely an odd bad design the way it s mounted and that clip was a bitch to get fully seated Service call amp hour labor