Hi Dave
Thanks for your query. This is answered in C8.1(h) "It is not permitted to vary the designed chord width, profile or shape of either the rudder or the daggerboard from that Originally Supplied.", see also C6.1.5. This rule was included to allow removal of any imperfections occuring during the molding, for example any projection on the center line. However, RS produce such a high quality product that the rudder and centerboard rarely have these imperfections. That rule therefore rarely has any use.
David
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