This isn't exactly difficult, but it can be tedious, and it will eat up your resources for upgrading your Kitchen, Door, Bed and Workbench. Simply save all of your crafting materials (except for crafting one really good weapon) for upgrading the Elevator Panels that you will come across. If you do not have any materials, keep attempting to fix them without resources or come back them when you do have some materials. However, attempting to fix them without resources will deplete your hunger!