The base on the Merriman pedestal on my '84 Hunter 34 is corroded to the point of structural failure. Does anyone know if the base on these is a separate part from the 4" column? Does anyone know if the base for an Edson is interchangeable? Does anyone have an old merriman pedestal that would be willing to sell me the base? I REALLY don't want to shell out $800 for a new Pedestal.