Two friends and ! are refurbishing two 2500 series boats.  We intend to make them available at very reasonable prices to entice new club members to come and sail with us on Lake Monona in Madison Wisconsin.  One centerboard we are repairing is different that others that I have seen.  There is a seam in the glass perpendicular to the length of the board about half way up the board.  It won't make any difference to our repair but it is puzzling.  It seems that when laying up the board the cloth would be  installed length wise rather than two pieces crosswise as you can see in the picture.  Has anyone seen this before.  This board is from a Douglas boat.  I would call Harry and ask but we have bugged him enough with questions on these project boats that I will feel quilty until we buy some more parts from him next spring  :-)