Hu? What about F18 class rule C.9.6:

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STANDING RIGGING
(a) It is NOT permitted to adjust: mast rake, tension of standing rigging, angle or length of spreaders or diamond wire tension.


Last edited by pepin; 04/22/10 10:58 AM. Reason: I got it, the important point is the "between races" bit. Ignore this message :)