Our air bed mattress on our 2010 Sundance couch/futon has a couple of cuts presumably caused by the act of folding it up in the couch. When I checked it last, it was fine, folded it up and now it has two cuts top and side either from being pinched or something on the metal frame cut it. I am attempting to patch them now. I would like to know if anyone has ever replaced this mattress and where can I get one. There is no information at all on the information sheet about brand or a company address or phone number, only that it is made in China. I guess that is a good clue. Any help out there? I do have a call into Heartland, and got someone's voice mail.