Join Date: Dec 2008
Location: Calgary, AB, Canada
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You said it's noticeable when you're close-hauled.
Are the sails absolutely symmetrical? Like, does the jib have luff foam or luff rope on it? Could be disturbing wind at the leading edge.
It could even be dissimilar shroud tensions; the are a myriad of possibilities. I will stick with my first guess based on your list to port.
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