Trying to sell my 2010 Salem Hemisphere 5th wheel, am told by Forest River it was manufactured in Oregon. The model number by the door says SFR-30FR, but this number does not appear anywhere on the various NADA guide categories for Salem. Forest River inquiry resulted in an email telling me they were forwarding my question to Oregon, who has not responded. Anybody know where else the correct model number might be? Purchased used, so no original documents. HELP!