You are correct g daddy, there is only one mark on the north sails....sooo what i have found is that the front line is right on the mark, hopefully that will work for you... cheers to the rest of you in florence and elsewhere

I've been sailing on norths for years and sail with my lines just a couple of inches apart max, what i have found is that the vts markings on the sail for harness lines doesn't quite work for me, what does work is that i find the rear mark is correct, it's the front one that is off, so try placing ...