Hi, where do I get the basic tuning measurements for my 260. The turnbuckles have a small kink in each of them on the main shrouds for which I have replacements shrouds complete with new turnbuckles. I need a rake measurement and how tight the shrouds and the lowers. Any info will be helpful to start with. maybe a measurement from the top of the mast to the mainsheet anchor point or somewhere on the transom???