Lets not forget that the older pre 1987 M_15s had steel shot for ballast. 
While most of these boats are fine, a number of them had (over the years) water 
intrude into the keel and start
rusting the steel shot. As the steel rusts, the keel swells up and squeezes the 
centerboard. All M_15 
centerboards pre 1987 also were fiberglass with steel shot inside. These also 
could swell up over the years and get
stuck in the up position. The weight of all these fiberglass/steel shot boards 
was close to 45 pounds. Never more
than about 47 pounds.  All the M_boats after 1987, both in the 15 and 17 have 
lead instead of steel for ballast material inside the keel
and inside the 45 pound centerboard. 

I doubt that Tom has dirt holding the board up. More likely the board,
keel trunk or both has swelled  up and is now stuck. Same for you Jim. Once you 
get the board out it has
to be made thinner so it won't be sticky. (sand smooth and carefully remove 
some of the material on the
fat part).

We use nothing but pure lead. No rust, no swelling.

Fair winds
Bob
(949) 489-8227


Robert Eeg
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