If your wooden dining chairs are not smooth, you can fix them with a simple adjustment. First, loosen all the screws slightly, then place the chair on the flat surface you plan to use. Sit on the chair and move it slightly from side to side so that the legs touch the ground evenly. After that, tighten the screws again. If this method does not solve the problem, or if you need further assistance, please contact our customer service team. This will ensure the stability of the chair and give you peace of mind.