I contacted a man I know who works at an RV dealership. He recommended having a Sunnybrook dealer contact the factory to see if one is available. They normally do not deal directly with the consumer. He further stated that the OEM Sunnybrook owners manual is "rather pathetic", as are most RV owners manuals.
If you want appliance manuals they are available on-line from Aero-Rv.com - Aerolite Ultra Lite RV Travel Trailer and Expandable Hybrid Campers
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"