My '77 vintage M-17 spends the summer on Lake Calhoun in Minneapolis. I launched for the season last week (a bit late) and took my first sail yesterday. When I tried to drop the centerboard it didn't move. It is stuck in the up position. I've had the boat since 1999 and this is the first such problem. I did have a problem raising the board a couple of years ago, but that problem went away on its own after a couple of weeks. I've looked at the photos and diagram of the centerboard on a '78 model on the msog.org website, so I think I know what is inside the CB trunk that I can't see. I thought about pushing a rod of some kind through the pendant opening to try to push the board down, but the hole is not much bigger than the pendant. I also don't want to damage the pendant or its connection to the CB. Does anybody out there have an idea what might be binding the CB, and what I can do to dislodge it without breaking something? Rich Makela M-17 #233