I would really appreciate some advise on how to go about measuring and cutting the ss standing rigging for my Haven 12.5. Once the rigging is attached to the mast (in this case it is loop over the peak) and brought down to the chain plate location where do I start measuring. I am using norse fittings. Are the turnbuckles tightened up, out or part way? As you can tell I am completely lost on this one. Help.