I can't help you find the leak other than suggest you blow it up and submerse area by area in water to find the bubbles, and not sure you can do that being it is connected to electric. We have used a air mattress that we have for tenting when grandkids come on the floor. I am thinking about buying a aerobed, they can be purchased in a raised bed.. We have a 2011 and have used the airbed in the couch twice, kids said it was comfortable but hate having to shove the recliners back out of the way before pulling it out. Our last 5er had a very comfortable pull out bed, I do miss that but this Big Horn has other things that make up for the loss of the regular pull out couch.