I am the happy owner of a 2009 Coleman Cheyenne and I am trying to get some clarification on an add a room for it. The camper currently has the Coleman stock bag awning on it, which measures 9'4". I was advised to only buy the AAR that was made the same year as the camper as Coleman was prone to changing the awning sizes from year to year. Does anyone know if that is true? Other than eBay and CL does anyone have a good lead for finding one? I would prefer the add a room but at this point would take a screen room. The Coleman stock numbers for that year was 4750G2921 for the add a room and 47576161 for the screen room. Thanks in advance for the help!