by talbot » Mon Jul 07, 2008 12:02 pm
I used to have a DSII like that, but I don't recall any set screw. The two plates hold a thick Delrin dowel in an enclosed pocket in the hull. The dowel goes throught the pivot hole in the board. The dowel turns freely in its pocket. It's a very simply arrangement, and it's hard to imagine how that part of the system would stick.
The usual board-binding problem on the DSII is the centerboard uphaul cable. When the board is down, the slack uphaul tends to wedge between the board and the trunk--sometimes so tightly that the boat has to be hauled and the board removed. The fix is to attach a bungee to the uphaul cable where it emerges from the front of the trunk inside the cuddy. Run the bungee to the base of the mast. When the board is lowered, the bungee will stretch enough to let the board down, but will keep enough tension on the cable that it won't droop between the board and the trunk.