Simon,

I don't have my boat in front of me, but ....



You say that the measurement from the inwale (which I guess means approx the original for/aft jib track) is up to 42 inches. Wouldn't this put one set of eylets right about midship? Could these measurements by chance be in cm rather than inches.



Last I remember, the jib can only be move inboard approx 12 inches from the tracks.