Have a 2918 273qbxl and we had a hard rain for at least 5 hours yesterday. Ready to retire last night we pull the bedspread down and pillows that were pushed against the back wall of bed. The bedspread was wet just on the left side along with the pillow. Wasn’t saturated but wet. I looked everywhere to see water markings or drips but it’s just not there. Anyone have an idea of this mystery?