I would like to replace my fluke Danforth anchor with a 25 lb Manson Supreme. It seems I would also have to replace the anchor roller unit. Can anyone suggest what I should use as a new one. The end of the shank does not fit into the opening of the anchor locker on the Hunter 290 and I need the vertical loop on it to attach the spinnacker clew. Should it be SS or galvanized? Thanks.