Center Board and handle replacement

I purchased a 1983 Spindrift DSI this summmer and decided to replace the center board and handle assembly. The new handle assembly came with a large stud that is pressed into the end of the square shaft that goes through the center board, however the center board trunk doesn't have any openings for the stud. I was wondering if any other manufacturer has a bushing of some sort that is molded into the center board trunk, or has anyone adapted the trunk with some sort of hat bushing to accept the stud that is pressed into the handle.
Doug Doughty (ddoughty-at-sprynet.com)
Doug Doughty (ddoughty-at-sprynet.com)