A chair causes an unlubricated lock of the door. You can't use a WD-40 or a silicone-they're too thin. It would take more consistency, for example, Liqui Moly (dirty white lubricant), its main advantage in the fact that it is practically liquid in the original form, it allows it to penetrate well into the cavity, and after the application of the "flying" component, the viscous mass remains. Smooching the better, the better. First, the upper cavity is filled, then the bottom cavity is filled. After that the door needs to be closed several times-open to distribute the lubricant.