OK guys, the Red Valterra Hose and fitting work if you slip the "l" shaped fitting from the large fitting that slips into the sewer. The "l" will fit thru from the inside and pull the hose thru leaving the twist lock end at the coach connection.
OR ................. I just bought the new "Blue Line" hose assembly and the fittings are slip on. Never had a problem with leaks yet.
Hope this helps, Clyde