I have installed a Swedoor Jeldewein interior door that is not solid. There is a plastic piece on the door that is unscrewed and where the hinge is inserted. However, I am unsure whether a screw should go into the empty hole in the plastic piece. There is a chamfer in the plastic where the hole is that looks like it would fit a screw well. Today, the hinge came off the door when the door blew open.