I own a 1996 Hunter 260 , water ballast, with Hunter trailer. I need to replace the 1000 lb swivel tongue jack. A normal aftermarket replacement jack will not match the factory welded, jack mounting plate which has 7" square mounting holes for the jack plate. Can anyone help me find the original manufacturer or a current supplier of an OEM replacement jack. (Hunterowners Store ?) The original jack came with interchangeable wheel or flat plate base.