Christian, Best I understand, it was in 1988 that all Monty's began being built using lead ballast in the keel. I believe it was early 1988 for the M15 and mid-1988 for the M17. The M15 and newer M17 centerboards are also lead ballasted. The M17's started using the same centerboard as the M15's in early 1988. With the M15 I believe the centerboards became lead ballasted before the keel, but not sure how much before. Our M17 was built during this transition. She was built in Jan. of 1988 and has the newer lead centerboard, but the older punching ballast Someone please correct me if I am wrong. Randy G. M17 #410 From: m15@frontiernet.net Sent: Wed 1/17/2007 1:26 PM To: For and about Montgomery Sailboats; Jorge Johnson Cc: montgomery_boats@mailman.xmission.com Subject: Re: M_Boats: Lead Keel Quick Question, What year did the M15's go to a "LEAD" keel? Thanks Christian _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats