I have a 2013 Rockwood Ultra Lite 2880WS Fifthwheel. I have checked and double checked for leaks at every connection etc, and my CO2 detector still goes off after several hours of being energized. I belive I have a faulty leak dector but not sure. Once when it went off I used my hand held leak detector at the time and location and it did not pick up a leak. Has anyone experienced the same problem