Seat parts needed
 

Looking to buy a few parts for Seacraft seats that I just bought second hand ( parts needed are for the sliders and swivels under the seats )

Anyone know what make the helm seats are off a mid 80's SC ? Or, more precisely, where can I find parts for the sliders under helm seats - i.e. I need the 5" aluminum shaft/handle that adjusts to control friction on the seat.