I am only 2 months into a newly built home and the screws that were used for the drywall appear to be popping out in several places. I have seen an earlier post about nails and the reply suggested screws, but these screws are coming out too! Is this normal for a house only 2 months old? What do I need to tell the builders to do to rectify this situation so I can know if there is a major issue that may happen after the year warranty!