I have a 1973 DS2. I have jammed the centerboard in it's casing a few times with shells etc and have always been able to shake it out with the lines. However it's only a matter of time till it gets seriously jammed at the wrong time.
I have seen pictures of (2) DS's that had a drain plug on the top of the cboard trunk where I thought a stick or whatever could be used to force the board down.
When I tried drilling a pilot hole for a drain plug assembly today (6" aft of the centerboard jam cleat) I went thru one layer of fiberglass , past a void (maybe an inch deep, and then hit another layer of fiberglass. I stopped at that point.
Does anybody know the actual construction of the centerboard trunk?
Thanks for all info,
Mackrelman