If you are having trouble assembling your unit or believe that some parts may be faulty please contact us. Our Brinly Customer Service representative will be ready and willing to assist you. We sometimes find that the lock bar is installed too far forward or too far back on the bed. This results in difficult locking or the bed coming unlatched. In addition, the spring on the underside of the foot pedal is crucial to the operation of the unit. Please ensure that it is correctly installed. If you have further questions please give us a call at 877-728-8224.